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Finding the Fourth Proportional to 92,321.40, 138,482.13 and 29,147.93

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Solution

The fourth proportional to 92,321.40, 138,482.13 and 29,147.93 is: 43,721.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,321.40 : 138,482.13 = 29,147.93 : x
  2. Step 2: Convert to fraction form
    92,321.40/138,482.13 = 29,147.93/x
  3. Step 3: Cross multiply
    92,321.40x = 138,482.13 × 29,147.93
  4. Step 4: Simplify right side
    92,321.40x = 4,036,466,739.08
  5. Step 5: Solve for x
    x = 4,036,466,739.08/92,321.40
  6. Step 6: Final answer
    x = 43,721.90

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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.