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Finding the Fourth Proportional to 61,893.32, 85,400.34 and 38,023.88

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Solution

The fourth proportional to 61,893.32, 85,400.34 and 38,023.88 is: 52,465.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,893.32 : 85,400.34 = 38,023.88 : x
  2. Step 2: Convert to fraction form
    61,893.32/85,400.34 = 38,023.88/x
  3. Step 3: Cross multiply
    61,893.32x = 85,400.34 × 38,023.88
  4. Step 4: Simplify right side
    61,893.32x = 3,247,252,280.12
  5. Step 5: Solve for x
    x = 3,247,252,280.12/61,893.32
  6. Step 6: Final answer
    x = 52,465.31

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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.