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Finding the Fourth Proportional to 22,400.61, 33,580.08 and 9,913.95

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Solution

The fourth proportional to 22,400.61, 33,580.08 and 9,913.95 is: 14,861.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,400.61 : 33,580.08 = 9,913.95 : x
  2. Step 2: Convert to fraction form
    22,400.61/33,580.08 = 9,913.95/x
  3. Step 3: Cross multiply
    22,400.61x = 33,580.08 × 9,913.95
  4. Step 4: Simplify right side
    22,400.61x = 332,911,234.12
  5. Step 5: Solve for x
    x = 332,911,234.12/22,400.61
  6. Step 6: Final answer
    x = 14,861.70

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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.