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Finding the Fourth Proportional to 93,133.60, 128,517.20 and 50,691.20

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Solution

The fourth proportional to 93,133.60, 128,517.20 and 50,691.20 is: 69,949.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,133.60 : 128,517.20 = 50,691.20 : x
  2. Step 2: Convert to fraction form
    93,133.60/128,517.20 = 50,691.20/x
  3. Step 3: Cross multiply
    93,133.60x = 128,517.20 × 50,691.20
  4. Step 4: Simplify right side
    93,133.60x = 6,514,691,088.64
  5. Step 5: Solve for x
    x = 6,514,691,088.64/93,133.60
  6. Step 6: Final answer
    x = 69,949.95

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1.5x scale

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.