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Finding the Fourth Proportional to 261,932.60, 393,071.70 and 95,720.60

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Solution

The fourth proportional to 261,932.60, 393,071.70 and 95,720.60 is: 143,644.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,932.60 : 393,071.70 = 95,720.60 : x
  2. Step 2: Convert to fraction form
    261,932.60/393,071.70 = 95,720.60/x
  3. Step 3: Cross multiply
    261,932.60x = 393,071.70 × 95,720.60
  4. Step 4: Simplify right side
    261,932.60x = 37,625,058,967.02
  5. Step 5: Solve for x
    x = 37,625,058,967.02/261,932.60
  6. Step 6: Final answer
    x = 143,644.05

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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.