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Finding the Fourth Proportional to 84,646.89, 126,960.21 and 25,482.87

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Solution

The fourth proportional to 84,646.89, 126,960.21 and 25,482.87 is: 38,221.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,646.89 : 126,960.21 = 25,482.87 : x
  2. Step 2: Convert to fraction form
    84,646.89/126,960.21 = 25,482.87/x
  3. Step 3: Cross multiply
    84,646.89x = 126,960.21 × 25,482.87
  4. Step 4: Simplify right side
    84,646.89x = 3,235,310,526.60
  5. Step 5: Solve for x
    x = 3,235,310,526.60/84,646.89
  6. Step 6: Final answer
    x = 38,221.26

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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.