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Finding the Fourth Proportional to 515,601.38, 711,534.76 and 289,251.74

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Solution

The fourth proportional to 515,601.38, 711,534.76 and 289,251.74 is: 399,170.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,601.38 : 711,534.76 = 289,251.74 : x
  2. Step 2: Convert to fraction form
    515,601.38/711,534.76 = 289,251.74/x
  3. Step 3: Cross multiply
    515,601.38x = 711,534.76 × 289,251.74
  4. Step 4: Simplify right side
    515,601.38x = 205,812,667,400.48
  5. Step 5: Solve for x
    x = 205,812,667,400.48/515,601.38
  6. Step 6: Final answer
    x = 399,170.13

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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.