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Finding the Fourth Proportional to 117,948.60, 176,922.90 and 91,672.20

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Solution

The fourth proportional to 117,948.60, 176,922.90 and 91,672.20 is: 137,508.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,948.60 : 176,922.90 = 91,672.20 : x
  2. Step 2: Convert to fraction form
    117,948.60/176,922.90 = 91,672.20/x
  3. Step 3: Cross multiply
    117,948.60x = 176,922.90 × 91,672.20
  4. Step 4: Simplify right side
    117,948.60x = 16,218,911,473.38
  5. Step 5: Solve for x
    x = 16,218,911,473.38/117,948.60
  6. Step 6: Final answer
    x = 137,508.30

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1.5x scale

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.