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Finding the Fourth Proportional to 123,710.90, 185,566.35 and 92,218.10

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Solution

The fourth proportional to 123,710.90, 185,566.35 and 92,218.10 is: 138,327.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,710.90 : 185,566.35 = 92,218.10 : x
  2. Step 2: Convert to fraction form
    123,710.90/185,566.35 = 92,218.10/x
  3. Step 3: Cross multiply
    123,710.90x = 185,566.35 × 92,218.10
  4. Step 4: Simplify right side
    123,710.90x = 17,112,576,220.94
  5. Step 5: Solve for x
    x = 17,112,576,220.94/123,710.90
  6. Step 6: Final answer
    x = 138,327.15

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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.