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Finding the Fourth Proportional to 92,648.88, 138,978.18 and 29,475.90

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Solution

The fourth proportional to 92,648.88, 138,978.18 and 29,475.90 is: 44,215.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,648.88 : 138,978.18 = 29,475.90 : x
  2. Step 2: Convert to fraction form
    92,648.88/138,978.18 = 29,475.90/x
  3. Step 3: Cross multiply
    92,648.88x = 138,978.18 × 29,475.90
  4. Step 4: Simplify right side
    92,648.88x = 4,096,506,935.86
  5. Step 5: Solve for x
    x = 4,096,506,935.86/92,648.88
  6. Step 6: Final answer
    x = 44,215.40

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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.