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Finding the Fourth Proportional to 531,100.71, 732,909.75 and 289,385.27

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Solution

The fourth proportional to 531,100.71, 732,909.75 and 289,385.27 is: 399,346.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,100.71 : 732,909.75 = 289,385.27 : x
  2. Step 2: Convert to fraction form
    531,100.71/732,909.75 = 289,385.27/x
  3. Step 3: Cross multiply
    531,100.71x = 732,909.75 × 289,385.27
  4. Step 4: Simplify right side
    531,100.71x = 212,093,285,889.38
  5. Step 5: Solve for x
    x = 212,093,285,889.38/531,100.71
  6. Step 6: Final answer
    x = 399,346.64

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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.