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Finding the Fourth Proportional to 84,820.30, 127,250.43 and 25,656.46

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Solution

The fourth proportional to 84,820.30, 127,250.43 and 25,656.46 is: 38,490.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,820.30 : 127,250.43 = 25,656.46 : x
  2. Step 2: Convert to fraction form
    84,820.30/127,250.43 = 25,656.46/x
  3. Step 3: Cross multiply
    84,820.30x = 127,250.43 × 25,656.46
  4. Step 4: Simplify right side
    84,820.30x = 3,264,795,567.28
  5. Step 5: Solve for x
    x = 3,264,795,567.28/84,820.30
  6. Step 6: Final answer
    x = 38,490.73

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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.