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Finding the Fourth Proportional to 22,572.88, 33,851.88 and 9,421.72

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Solution

The fourth proportional to 22,572.88, 33,851.88 and 9,421.72 is: 14,129.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,572.88 : 33,851.88 = 9,421.72 : x
  2. Step 2: Convert to fraction form
    22,572.88/33,851.88 = 9,421.72/x
  3. Step 3: Cross multiply
    22,572.88x = 33,851.88 × 9,421.72
  4. Step 4: Simplify right side
    22,572.88x = 318,942,934.83
  5. Step 5: Solve for x
    x = 318,942,934.83/22,572.88
  6. Step 6: Final answer
    x = 14,129.47

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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.