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Finding the Fourth Proportional to 14,649.17, 20,215.85 and 7,934.74

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Solution

The fourth proportional to 14,649.17, 20,215.85 and 7,934.74 is: 10,949.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,649.17 : 20,215.85 = 7,934.74 : x
  2. Step 2: Convert to fraction form
    14,649.17/20,215.85 = 7,934.74/x
  3. Step 3: Cross multiply
    14,649.17x = 20,215.85 × 7,934.74
  4. Step 4: Simplify right side
    14,649.17x = 160,407,423.42
  5. Step 5: Solve for x
    x = 160,407,423.42/14,649.17
  6. Step 6: Final answer
    x = 10,949.94

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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.