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Finding the Fourth Proportional to 261,831.60, 392,778.15 and 93,375.87

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Solution

The fourth proportional to 261,831.60, 392,778.15 and 93,375.87 is: 140,074.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,831.60 : 392,778.15 = 93,375.87 : x
  2. Step 2: Convert to fraction form
    261,831.60/392,778.15 = 93,375.87/x
  3. Step 3: Cross multiply
    261,831.60x = 392,778.15 × 93,375.87
  4. Step 4: Simplify right side
    261,831.60x = 36,676,001,473.24
  5. Step 5: Solve for x
    x = 36,676,001,473.24/261,831.60
  6. Step 6: Final answer
    x = 140,074.77

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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.