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Finding the Fourth Proportional to 22,404.60, 30,925.80 and 16,378.20

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Solution

The fourth proportional to 22,404.60, 30,925.80 and 16,378.20 is: 22,607.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,404.60 : 30,925.80 = 16,378.20 : x
  2. Step 2: Convert to fraction form
    22,404.60/30,925.80 = 16,378.20/x
  3. Step 3: Cross multiply
    22,404.60x = 30,925.80 × 16,378.20
  4. Step 4: Simplify right side
    22,404.60x = 506,508,937.56
  5. Step 5: Solve for x
    x = 506,508,937.56/22,404.60
  6. Step 6: Final answer
    x = 22,607.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.