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Finding the Fourth Proportional to 60,904.78, 84,046.55 and 42,781.75

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Solution

The fourth proportional to 60,904.78, 84,046.55 and 42,781.75 is: 59,037.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,904.78 : 84,046.55 = 42,781.75 : x
  2. Step 2: Convert to fraction form
    60,904.78/84,046.55 = 42,781.75/x
  3. Step 3: Cross multiply
    60,904.78x = 84,046.55 × 42,781.75
  4. Step 4: Simplify right side
    60,904.78x = 3,595,658,066.44
  5. Step 5: Solve for x
    x = 3,595,658,066.44/60,904.78
  6. Step 6: Final answer
    x = 59,037.37

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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.