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Finding the Fourth Proportional to 25,129.80, 37,731.90 and 14,058.60

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Solution

The fourth proportional to 25,129.80, 37,731.90 and 14,058.60 is: 21,108.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,129.80 : 37,731.90 = 14,058.60 : x
  2. Step 2: Convert to fraction form
    25,129.80/37,731.90 = 14,058.60/x
  3. Step 3: Cross multiply
    25,129.80x = 37,731.90 × 14,058.60
  4. Step 4: Simplify right side
    25,129.80x = 530,457,689.34
  5. Step 5: Solve for x
    x = 530,457,689.34/25,129.80
  6. Step 6: Final answer
    x = 21,108.71

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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.