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Finding the Fourth Proportional to 93,132.57, 128,522.84 and 50,691

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Solution

The fourth proportional to 93,132.57, 128,522.84 and 50,691 is: 69,953.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,132.57 : 128,522.84 = 50,691 : x
  2. Step 2: Convert to fraction form
    93,132.57/128,522.84 = 50,691/x
  3. Step 3: Cross multiply
    93,132.57x = 128,522.84 × 50,691
  4. Step 4: Simplify right side
    93,132.57x = 6,514,951,282.44
  5. Step 5: Solve for x
    x = 6,514,951,282.44/93,132.57
  6. Step 6: Final answer
    x = 69,953.52

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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.