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Finding the Fourth Proportional to 531,496.91, 733,455.86 and 289,781.57

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Solution

The fourth proportional to 531,496.91, 733,455.86 and 289,781.57 is: 399,893.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,496.91 : 733,455.86 = 289,781.57 : x
  2. Step 2: Convert to fraction form
    531,496.91/733,455.86 = 289,781.57/x
  3. Step 3: Cross multiply
    531,496.91x = 733,455.86 × 289,781.57
  4. Step 4: Simplify right side
    531,496.91x = 212,541,985,520.31
  5. Step 5: Solve for x
    x = 212,541,985,520.31/531,496.91
  6. Step 6: Final answer
    x = 399,893.18

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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.