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Finding the Fourth Proportional to 61,648.90, 85,079.99 and 34,793.76

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Solution

The fourth proportional to 61,648.90, 85,079.99 and 34,793.76 is: 48,017.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,648.90 : 85,079.99 = 34,793.76 : x
  2. Step 2: Convert to fraction form
    61,648.90/85,079.99 = 34,793.76/x
  3. Step 3: Cross multiply
    61,648.90x = 85,079.99 × 34,793.76
  4. Step 4: Simplify right side
    61,648.90x = 2,960,252,752.86
  5. Step 5: Solve for x
    x = 2,960,252,752.86/61,648.90
  6. Step 6: Final answer
    x = 48,017.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.