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Finding the Fourth Proportional to 261,572.52, 391,801.90 and 197,688.92

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Solution

The fourth proportional to 261,572.52, 391,801.90 and 197,688.92 is: 296,112.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,572.52 : 391,801.90 = 197,688.92 : x
  2. Step 2: Convert to fraction form
    261,572.52/391,801.90 = 197,688.92/x
  3. Step 3: Cross multiply
    261,572.52x = 391,801.90 × 197,688.92
  4. Step 4: Simplify right side
    261,572.52x = 77,454,894,464.95
  5. Step 5: Solve for x
    x = 77,454,894,464.95/261,572.52
  6. Step 6: Final answer
    x = 296,112.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.