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Finding the Fourth Proportional to 91,136.94, 125,753.88 and 60,873.72

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Solution

The fourth proportional to 91,136.94, 125,753.88 and 60,873.72 is: 83,995.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,136.94 : 125,753.88 = 60,873.72 : x
  2. Step 2: Convert to fraction form
    91,136.94/125,753.88 = 60,873.72/x
  3. Step 3: Cross multiply
    91,136.94x = 125,753.88 × 60,873.72
  4. Step 4: Simplify right side
    91,136.94x = 7,655,106,480.03
  5. Step 5: Solve for x
    x = 7,655,106,480.03/91,136.94
  6. Step 6: Final answer
    x = 83,995.65

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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.