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Finding the Fourth Proportional to 61,247.60, 84,515.40 and 34,393.08

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Solution

The fourth proportional to 61,247.60, 84,515.40 and 34,393.08 is: 47,458.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,247.60 : 84,515.40 = 34,393.08 : x
  2. Step 2: Convert to fraction form
    61,247.60/84,515.40 = 34,393.08/x
  3. Step 3: Cross multiply
    61,247.60x = 84,515.40 × 34,393.08
  4. Step 4: Simplify right side
    61,247.60x = 2,906,744,913.43
  5. Step 5: Solve for x
    x = 2,906,744,913.43/61,247.60
  6. Step 6: Final answer
    x = 47,458.92

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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.