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Finding the Fourth Proportional to 138,080.66, 207,156.63 and 63,165.02

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Solution

The fourth proportional to 138,080.66, 207,156.63 and 63,165.02 is: 94,763.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,080.66 : 207,156.63 = 63,165.02 : x
  2. Step 2: Convert to fraction form
    138,080.66/207,156.63 = 63,165.02/x
  3. Step 3: Cross multiply
    138,080.66x = 207,156.63 × 63,165.02
  4. Step 4: Simplify right side
    138,080.66x = 13,085,052,677.08
  5. Step 5: Solve for x
    x = 13,085,052,677.08/138,080.66
  6. Step 6: Final answer
    x = 94,763.83

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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.