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Finding the Fourth Proportional to 58,743.68, 81,087.84 and 42,909.44

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Solution

The fourth proportional to 58,743.68, 81,087.84 and 42,909.44 is: 59,230.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,743.68 : 81,087.84 = 42,909.44 : x
  2. Step 2: Convert to fraction form
    58,743.68/81,087.84 = 42,909.44/x
  3. Step 3: Cross multiply
    58,743.68x = 81,087.84 × 42,909.44
  4. Step 4: Simplify right side
    58,743.68x = 3,479,433,805.21
  5. Step 5: Solve for x
    x = 3,479,433,805.21/58,743.68
  6. Step 6: Final answer
    x = 59,230.78

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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.