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Finding the Fourth Proportional to 123,656.40, 185,484.60 and 106,743.60

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Solution

The fourth proportional to 123,656.40, 185,484.60 and 106,743.60 is: 160,115.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,656.40 : 185,484.60 = 106,743.60 : x
  2. Step 2: Convert to fraction form
    123,656.40/185,484.60 = 106,743.60/x
  3. Step 3: Cross multiply
    123,656.40x = 185,484.60 × 106,743.60
  4. Step 4: Simplify right side
    123,656.40x = 19,799,293,948.56
  5. Step 5: Solve for x
    x = 19,799,293,948.56/123,656.40
  6. Step 6: Final answer
    x = 160,115.40

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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.