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Finding the Fourth Proportional to 61,722.63, 85,184.16 and 34,866.87

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Solution

The fourth proportional to 61,722.63, 85,184.16 and 34,866.87 is: 48,120.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,722.63 : 85,184.16 = 34,866.87 : x
  2. Step 2: Convert to fraction form
    61,722.63/85,184.16 = 34,866.87/x
  3. Step 3: Cross multiply
    61,722.63x = 85,184.16 × 34,866.87
  4. Step 4: Simplify right side
    61,722.63x = 2,970,105,032.78
  5. Step 5: Solve for x
    x = 2,970,105,032.78/61,722.63
  6. Step 6: Final answer
    x = 48,120.20

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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.