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Finding the Fourth Proportional to 57,392.01, 79,248.76 and 47,881.76

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Solution

The fourth proportional to 57,392.01, 79,248.76 and 47,881.76 is: 66,116.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,392.01 : 79,248.76 = 47,881.76 : x
  2. Step 2: Convert to fraction form
    57,392.01/79,248.76 = 47,881.76/x
  3. Step 3: Cross multiply
    57,392.01x = 79,248.76 × 47,881.76
  4. Step 4: Simplify right side
    57,392.01x = 3,794,569,590.67
  5. Step 5: Solve for x
    x = 3,794,569,590.67/57,392.01
  6. Step 6: Final answer
    x = 66,116.69

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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.