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Finding the Fourth Proportional to 198,416.59, 273,831.82 and 112,390.92

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Solution

The fourth proportional to 198,416.59, 273,831.82 and 112,390.92 is: 155,109.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,416.59 : 273,831.82 = 112,390.92 : x
  2. Step 2: Convert to fraction form
    198,416.59/273,831.82 = 112,390.92/x
  3. Step 3: Cross multiply
    198,416.59x = 273,831.82 × 112,390.92
  4. Step 4: Simplify right side
    198,416.59x = 30,776,209,894.10
  5. Step 5: Solve for x
    x = 30,776,209,894.10/198,416.59
  6. Step 6: Final answer
    x = 155,109.06

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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.