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Finding the Fourth Proportional to 13,925.25, 20,891.16 and 4,691.25

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Solution

The fourth proportional to 13,925.25, 20,891.16 and 4,691.25 is: 7,037.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,925.25 : 20,891.16 = 4,691.25 : x
  2. Step 2: Convert to fraction form
    13,925.25/20,891.16 = 4,691.25/x
  3. Step 3: Cross multiply
    13,925.25x = 20,891.16 × 4,691.25
  4. Step 4: Simplify right side
    13,925.25x = 98,005,654.35
  5. Step 5: Solve for x
    x = 98,005,654.35/13,925.25
  6. Step 6: Final answer
    x = 7,037.98

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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.