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Finding the Fourth Proportional to 14,648.61, 20,214.96 and 7,934.08

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Solution

The fourth proportional to 14,648.61, 20,214.96 and 7,934.08 is: 10,948.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,648.61 : 20,214.96 = 7,934.08 : x
  2. Step 2: Convert to fraction form
    14,648.61/20,214.96 = 7,934.08/x
  3. Step 3: Cross multiply
    14,648.61x = 20,214.96 × 7,934.08
  4. Step 4: Simplify right side
    14,648.61x = 160,387,109.84
  5. Step 5: Solve for x
    x = 160,387,109.84/14,648.61
  6. Step 6: Final answer
    x = 10,948.96

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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.