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Finding the Fourth Proportional to 60,642.67, 83,721.62 and 40,533.61

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Solution

The fourth proportional to 60,642.67, 83,721.62 and 40,533.61 is: 55,959.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,642.67 : 83,721.62 = 40,533.61 : x
  2. Step 2: Convert to fraction form
    60,642.67/83,721.62 = 40,533.61/x
  3. Step 3: Cross multiply
    60,642.67x = 83,721.62 × 40,533.61
  4. Step 4: Simplify right side
    60,642.67x = 3,393,539,493.65
  5. Step 5: Solve for x
    x = 3,393,539,493.65/60,642.67
  6. Step 6: Final answer
    x = 55,959.60

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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.