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Finding the Fourth Proportional to 92,584.80, 138,064.20 and 91,742.80

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Solution

The fourth proportional to 92,584.80, 138,064.20 and 91,742.80 is: 136,808.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,584.80 : 138,064.20 = 91,742.80 : x
  2. Step 2: Convert to fraction form
    92,584.80/138,064.20 = 91,742.80/x
  3. Step 3: Cross multiply
    92,584.80x = 138,064.20 × 91,742.80
  4. Step 4: Simplify right side
    92,584.80x = 12,666,396,287.76
  5. Step 5: Solve for x
    x = 12,666,396,287.76/92,584.80
  6. Step 6: Final answer
    x = 136,808.59

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.