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Finding the Fourth Proportional to 476,780.71, 715,092.45 and 156,936.74

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Solution

The fourth proportional to 476,780.71, 715,092.45 and 156,936.74 is: 235,379.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,780.71 : 715,092.45 = 156,936.74 : x
  2. Step 2: Convert to fraction form
    476,780.71/715,092.45 = 156,936.74/x
  3. Step 3: Cross multiply
    476,780.71x = 715,092.45 × 156,936.74
  4. Step 4: Simplify right side
    476,780.71x = 112,224,278,642.80
  5. Step 5: Solve for x
    x = 112,224,278,642.80/476,780.71
  6. Step 6: Final answer
    x = 235,379.24

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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.