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Finding the Fourth Proportional to 99,892.68, 137,856.10 and 57,451.26

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Solution

The fourth proportional to 99,892.68, 137,856.10 and 57,451.26 is: 79,285.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,892.68 : 137,856.10 = 57,451.26 : x
  2. Step 2: Convert to fraction form
    99,892.68/137,856.10 = 57,451.26/x
  3. Step 3: Cross multiply
    99,892.68x = 137,856.10 × 57,451.26
  4. Step 4: Simplify right side
    99,892.68x = 7,920,006,643.69
  5. Step 5: Solve for x
    x = 7,920,006,643.69/99,892.68
  6. Step 6: Final answer
    x = 79,285.16

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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.