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Finding the Fourth Proportional to 57,799.80, 86,699.70 and 18,360.90

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Solution

The fourth proportional to 57,799.80, 86,699.70 and 18,360.90 is: 27,541.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,799.80 : 86,699.70 = 18,360.90 : x
  2. Step 2: Convert to fraction form
    57,799.80/86,699.70 = 18,360.90/x
  3. Step 3: Cross multiply
    57,799.80x = 86,699.70 × 18,360.90
  4. Step 4: Simplify right side
    57,799.80x = 1,591,884,521.73
  5. Step 5: Solve for x
    x = 1,591,884,521.73/57,799.80
  6. Step 6: Final answer
    x = 27,541.35

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.