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Finding the Fourth Proportional to 123,616.20, 185,424.30 and 61,408.20

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Solution

The fourth proportional to 123,616.20, 185,424.30 and 61,408.20 is: 92,112.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,616.20 : 185,424.30 = 61,408.20 : x
  2. Step 2: Convert to fraction form
    123,616.20/185,424.30 = 61,408.20/x
  3. Step 3: Cross multiply
    123,616.20x = 185,424.30 × 61,408.20
  4. Step 4: Simplify right side
    123,616.20x = 11,386,572,499.26
  5. Step 5: Solve for x
    x = 11,386,572,499.26/123,616.20
  6. Step 6: Final answer
    x = 92,112.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.