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Finding the Fourth Proportional to 72,892.74, 100,574.28 and 41,061.60

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Solution

The fourth proportional to 72,892.74, 100,574.28 and 41,061.60 is: 56,655.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,892.74 : 100,574.28 = 41,061.60 : x
  2. Step 2: Convert to fraction form
    72,892.74/100,574.28 = 41,061.60/x
  3. Step 3: Cross multiply
    72,892.74x = 100,574.28 × 41,061.60
  4. Step 4: Simplify right side
    72,892.74x = 4,129,740,855.65
  5. Step 5: Solve for x
    x = 4,129,740,855.65/72,892.74
  6. Step 6: Final answer
    x = 56,655.04

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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.