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Finding the Fourth Proportional to 391,142,185,876.20, 586,713,278,814.30 and 391,142,185,876.20

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Solution

The fourth proportional to 391,142,185,876.20, 586,713,278,814.30 and 391,142,185,876.20 is: 586,713,278,814.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,142,185,876.20 : 586,713,278,814.30 = 391,142,185,876.20 : x
  2. Step 2: Convert to fraction form
    391,142,185,876.20/586,713,278,814.30 = 391,142,185,876.20/x
  3. Step 3: Cross multiply
    391,142,185,876.20x = 586,713,278,814.30 × 391,142,185,876.20
  4. Step 4: Simplify right side
    391,142,185,876.20x = 229,488,314,358,017,715,863,552
  5. Step 5: Solve for x
    x = 229,488,314,358,017,715,863,552/391,142,185,876.20
  6. Step 6: Final answer
    x = 586,713,278,814.30

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.