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Finding the Fourth Proportional to 62,478.84, 86,220.80 and 34,184.53

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Solution

The fourth proportional to 62,478.84, 86,220.80 and 34,184.53 is: 47,174.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,478.84 : 86,220.80 = 34,184.53 : x
  2. Step 2: Convert to fraction form
    62,478.84/86,220.80 = 34,184.53/x
  3. Step 3: Cross multiply
    62,478.84x = 86,220.80 × 34,184.53
  4. Step 4: Simplify right side
    62,478.84x = 2,947,417,781.56
  5. Step 5: Solve for x
    x = 2,947,417,781.56/62,478.84
  6. Step 6: Final answer
    x = 47,174.65

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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.