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Finding the Fourth Proportional to 54,482.50, 81,728.45 and 15,039.62

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Solution

The fourth proportional to 54,482.50, 81,728.45 and 15,039.62 is: 22,560.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,482.50 : 81,728.45 = 15,039.62 : x
  2. Step 2: Convert to fraction form
    54,482.50/81,728.45 = 15,039.62/x
  3. Step 3: Cross multiply
    54,482.50x = 81,728.45 × 15,039.62
  4. Step 4: Simplify right side
    54,482.50x = 1,229,164,347.35
  5. Step 5: Solve for x
    x = 1,229,164,347.35/54,482.50
  6. Step 6: Final answer
    x = 22,560.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.