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Finding the Fourth Proportional to 25,353.40, 34,987.76 and 14,175.40

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Solution

The fourth proportional to 25,353.40, 34,987.76 and 14,175.40 is: 19,562.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,353.40 : 34,987.76 = 14,175.40 : x
  2. Step 2: Convert to fraction form
    25,353.40/34,987.76 = 14,175.40/x
  3. Step 3: Cross multiply
    25,353.40x = 34,987.76 × 14,175.40
  4. Step 4: Simplify right side
    25,353.40x = 495,965,493.10
  5. Step 5: Solve for x
    x = 495,965,493.10/25,353.40
  6. Step 6: Final answer
    x = 19,562.09

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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.