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Finding the Fourth Proportional to 61,669.76, 85,109.84 and 34,818.86

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Solution

The fourth proportional to 61,669.76, 85,109.84 and 34,818.86 is: 48,053.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,669.76 : 85,109.84 = 34,818.86 : x
  2. Step 2: Convert to fraction form
    61,669.76/85,109.84 = 34,818.86/x
  3. Step 3: Cross multiply
    61,669.76x = 85,109.84 × 34,818.86
  4. Step 4: Simplify right side
    61,669.76x = 2,963,427,772.83
  5. Step 5: Solve for x
    x = 2,963,427,772.83/61,669.76
  6. Step 6: Final answer
    x = 48,053.18

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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.