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Finding the Fourth Proportional to 109,891.97, 151,658.20 and 61,498.44

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Solution

The fourth proportional to 109,891.97, 151,658.20 and 61,498.44 is: 84,871.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,891.97 : 151,658.20 = 61,498.44 : x
  2. Step 2: Convert to fraction form
    109,891.97/151,658.20 = 61,498.44/x
  3. Step 3: Cross multiply
    109,891.97x = 151,658.20 × 61,498.44
  4. Step 4: Simplify right side
    109,891.97x = 9,326,742,617.12
  5. Step 5: Solve for x
    x = 9,326,742,617.12/109,891.97
  6. Step 6: Final answer
    x = 84,871.92

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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.