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Finding the Fourth Proportional to 93,129.28, 128,516.96 and 54,882.77

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Solution

The fourth proportional to 93,129.28, 128,516.96 and 54,882.77 is: 75,737.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,129.28 : 128,516.96 = 54,882.77 : x
  2. Step 2: Convert to fraction form
    93,129.28/128,516.96 = 54,882.77/x
  3. Step 3: Cross multiply
    93,129.28x = 128,516.96 × 54,882.77
  4. Step 4: Simplify right side
    93,129.28x = 7,053,366,251.40
  5. Step 5: Solve for x
    x = 7,053,366,251.40/93,129.28
  6. Step 6: Final answer
    x = 75,737.37

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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.