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Finding the Fourth Proportional to 61,616.39, 85,053.62 and 47,977.43

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Solution

The fourth proportional to 61,616.39, 85,053.62 and 47,977.43 is: 66,226.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,616.39 : 85,053.62 = 47,977.43 : x
  2. Step 2: Convert to fraction form
    61,616.39/85,053.62 = 47,977.43/x
  3. Step 3: Cross multiply
    61,616.39x = 85,053.62 × 47,977.43
  4. Step 4: Simplify right side
    61,616.39x = 4,080,654,099.80
  5. Step 5: Solve for x
    x = 4,080,654,099.80/61,616.39
  6. Step 6: Final answer
    x = 66,226.76

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1.5x scale

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.