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Finding the Fourth Proportional to 25,108.32, 34,671.84 and 18,432

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Solution

The fourth proportional to 25,108.32, 34,671.84 and 18,432 is: 25,452.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,108.32 : 34,671.84 = 18,432 : x
  2. Step 2: Convert to fraction form
    25,108.32/34,671.84 = 18,432/x
  3. Step 3: Cross multiply
    25,108.32x = 34,671.84 × 18,432
  4. Step 4: Simplify right side
    25,108.32x = 639,071,354.88
  5. Step 5: Solve for x
    x = 639,071,354.88/25,108.32
  6. Step 6: Final answer
    x = 25,452.57

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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.