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Finding the Fourth Proportional to 531,061.20, 732,830.28 and 316,217.04

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Solution

The fourth proportional to 531,061.20, 732,830.28 and 316,217.04 is: 436,359.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,061.20 : 732,830.28 = 316,217.04 : x
  2. Step 2: Convert to fraction form
    531,061.20/732,830.28 = 316,217.04/x
  3. Step 3: Cross multiply
    531,061.20x = 732,830.28 × 316,217.04
  4. Step 4: Simplify right side
    531,061.20x = 231,733,421,963.97
  5. Step 5: Solve for x
    x = 231,733,421,963.97/531,061.20
  6. Step 6: Final answer
    x = 436,359.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.