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Finding the Fourth Proportional to 531,130.10, 732,950.04 and 289,414.76

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Solution

The fourth proportional to 531,130.10, 732,950.04 and 289,414.76 is: 399,387.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,130.10 : 732,950.04 = 289,414.76 : x
  2. Step 2: Convert to fraction form
    531,130.10/732,950.04 = 289,414.76/x
  3. Step 3: Cross multiply
    531,130.10x = 732,950.04 × 289,414.76
  4. Step 4: Simplify right side
    531,130.10x = 212,126,559,918.59
  5. Step 5: Solve for x
    x = 212,126,559,918.59/531,130.10
  6. Step 6: Final answer
    x = 399,387.19

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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.