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Finding the Fourth Proportional to 93,517.60, 139,930.80 and 85,223.20

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Solution

The fourth proportional to 93,517.60, 139,930.80 and 85,223.20 is: 127,519.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,517.60 : 139,930.80 = 85,223.20 : x
  2. Step 2: Convert to fraction form
    93,517.60/139,930.80 = 85,223.20/x
  3. Step 3: Cross multiply
    93,517.60x = 139,930.80 × 85,223.20
  4. Step 4: Simplify right side
    93,517.60x = 11,925,350,554.56
  5. Step 5: Solve for x
    x = 11,925,350,554.56/93,517.60
  6. Step 6: Final answer
    x = 127,519.85

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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.