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Finding the Fourth Proportional to 101,926.92, 140,654.34 and 56,607.80

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Solution

The fourth proportional to 101,926.92, 140,654.34 and 56,607.80 is: 78,116.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,926.92 : 140,654.34 = 56,607.80 : x
  2. Step 2: Convert to fraction form
    101,926.92/140,654.34 = 56,607.80/x
  3. Step 3: Cross multiply
    101,926.92x = 140,654.34 × 56,607.80
  4. Step 4: Simplify right side
    101,926.92x = 7,962,132,747.85
  5. Step 5: Solve for x
    x = 7,962,132,747.85/101,926.92
  6. Step 6: Final answer
    x = 78,116.09

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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.