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Finding the Fourth Proportional to 497,176.92, 686,080.53 and 282,288.78

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Solution

The fourth proportional to 497,176.92, 686,080.53 and 282,288.78 is: 389,545.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,176.92 : 686,080.53 = 282,288.78 : x
  2. Step 2: Convert to fraction form
    497,176.92/686,080.53 = 282,288.78/x
  3. Step 3: Cross multiply
    497,176.92x = 686,080.53 × 282,288.78
  4. Step 4: Simplify right side
    497,176.92x = 193,672,835,795.45
  5. Step 5: Solve for x
    x = 193,672,835,795.45/497,176.92
  6. Step 6: Final answer
    x = 389,545.11

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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.