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Finding the Fourth Proportional to 57,098.01, 85,499.40 and 39,383.31

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Solution

The fourth proportional to 57,098.01, 85,499.40 and 39,383.31 is: 58,973.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,098.01 : 85,499.40 = 39,383.31 : x
  2. Step 2: Convert to fraction form
    57,098.01/85,499.40 = 39,383.31/x
  3. Step 3: Cross multiply
    57,098.01x = 85,499.40 × 39,383.31
  4. Step 4: Simplify right side
    57,098.01x = 3,367,249,621.79
  5. Step 5: Solve for x
    x = 3,367,249,621.79/57,098.01
  6. Step 6: Final answer
    x = 58,973.15

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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.