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Finding the Fourth Proportional to 22,751.52, 34,127.37 and 12,428.88

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Solution

The fourth proportional to 22,751.52, 34,127.37 and 12,428.88 is: 18,643.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,751.52 : 34,127.37 = 12,428.88 : x
  2. Step 2: Convert to fraction form
    22,751.52/34,127.37 = 12,428.88/x
  3. Step 3: Cross multiply
    22,751.52x = 34,127.37 × 12,428.88
  4. Step 4: Simplify right side
    22,751.52x = 424,164,986.45
  5. Step 5: Solve for x
    x = 424,164,986.45/22,751.52
  6. Step 6: Final answer
    x = 18,643.37

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1.5x scale

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.