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Finding the Fourth Proportional to 25,617.64, 38,425.72 and 13,953.64

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Solution

The fourth proportional to 25,617.64, 38,425.72 and 13,953.64 is: 20,930.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,617.64 : 38,425.72 = 13,953.64 : x
  2. Step 2: Convert to fraction form
    25,617.64/38,425.72 = 13,953.64/x
  3. Step 3: Cross multiply
    25,617.64x = 38,425.72 × 13,953.64
  4. Step 4: Simplify right side
    25,617.64x = 536,178,663.62
  5. Step 5: Solve for x
    x = 536,178,663.62/25,617.64
  6. Step 6: Final answer
    x = 20,930.06

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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.