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Finding the Fourth Proportional to 139,601.32, 209,398.68 and 44,831.72

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Solution

The fourth proportional to 139,601.32, 209,398.68 and 44,831.72 is: 67,246.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,601.32 : 209,398.68 = 44,831.72 : x
  2. Step 2: Convert to fraction form
    139,601.32/209,398.68 = 44,831.72/x
  3. Step 3: Cross multiply
    139,601.32x = 209,398.68 × 44,831.72
  4. Step 4: Simplify right side
    139,601.32x = 9,387,702,990.13
  5. Step 5: Solve for x
    x = 9,387,702,990.13/139,601.32
  6. Step 6: Final answer
    x = 67,246.52

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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.