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Finding the Fourth Proportional to 54,615.40, 81,927.52 and 15,172.52

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Solution

The fourth proportional to 54,615.40, 81,927.52 and 15,172.52 is: 22,760.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,615.40 : 81,927.52 = 15,172.52 : x
  2. Step 2: Convert to fraction form
    54,615.40/81,927.52 = 15,172.52/x
  3. Step 3: Cross multiply
    54,615.40x = 81,927.52 × 15,172.52
  4. Step 4: Simplify right side
    54,615.40x = 1,243,046,488.18
  5. Step 5: Solve for x
    x = 1,243,046,488.18/54,615.40
  6. Step 6: Final answer
    x = 22,760.00

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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.