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Finding the Fourth Proportional to 25,061.31, 37,592.88 and 8,421.90

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Solution

The fourth proportional to 25,061.31, 37,592.88 and 8,421.90 is: 12,633.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,061.31 : 37,592.88 = 8,421.90 : x
  2. Step 2: Convert to fraction form
    25,061.31/37,592.88 = 8,421.90/x
  3. Step 3: Cross multiply
    25,061.31x = 37,592.88 × 8,421.90
  4. Step 4: Simplify right side
    25,061.31x = 316,603,476.07
  5. Step 5: Solve for x
    x = 316,603,476.07/25,061.31
  6. Step 6: Final answer
    x = 12,633.16

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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.