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Finding the Fourth Proportional to 61,472.66, 84,840.36 and 34,620.42

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Solution

The fourth proportional to 61,472.66, 84,840.36 and 34,620.42 is: 47,780.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,472.66 : 84,840.36 = 34,620.42 : x
  2. Step 2: Convert to fraction form
    61,472.66/84,840.36 = 34,620.42/x
  3. Step 3: Cross multiply
    61,472.66x = 84,840.36 × 34,620.42
  4. Step 4: Simplify right side
    61,472.66x = 2,937,208,896.15
  5. Step 5: Solve for x
    x = 2,937,208,896.15/61,472.66
  6. Step 6: Final answer
    x = 47,780.74

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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.