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Finding the Fourth Proportional to 132,079.60, 198,119.40 and 117,645.40

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Solution

The fourth proportional to 132,079.60, 198,119.40 and 117,645.40 is: 176,468.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,079.60 : 198,119.40 = 117,645.40 : x
  2. Step 2: Convert to fraction form
    132,079.60/198,119.40 = 117,645.40/x
  3. Step 3: Cross multiply
    132,079.60x = 198,119.40 × 117,645.40
  4. Step 4: Simplify right side
    132,079.60x = 23,307,836,060.76
  5. Step 5: Solve for x
    x = 23,307,836,060.76/132,079.60
  6. Step 6: Final answer
    x = 176,468.10

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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.