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Finding the Fourth Proportional to 504,417.20, 756,625.80 and 188,857.40

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Solution

The fourth proportional to 504,417.20, 756,625.80 and 188,857.40 is: 283,286.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,417.20 : 756,625.80 = 188,857.40 : x
  2. Step 2: Convert to fraction form
    504,417.20/756,625.80 = 188,857.40/x
  3. Step 3: Cross multiply
    504,417.20x = 756,625.80 × 188,857.40
  4. Step 4: Simplify right side
    504,417.20x = 142,894,381,360.92
  5. Step 5: Solve for x
    x = 142,894,381,360.92/504,417.20
  6. Step 6: Final answer
    x = 283,286.10

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Similar ratio
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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.