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Finding the Fourth Proportional to 86,241.96, 129,362.97 and 38,801.64

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Solution

The fourth proportional to 86,241.96, 129,362.97 and 38,801.64 is: 58,202.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,241.96 : 129,362.97 = 38,801.64 : x
  2. Step 2: Convert to fraction form
    86,241.96/129,362.97 = 38,801.64/x
  3. Step 3: Cross multiply
    86,241.96x = 129,362.97 × 38,801.64
  4. Step 4: Simplify right side
    86,241.96x = 5,019,495,391.27
  5. Step 5: Solve for x
    x = 5,019,495,391.27/86,241.96
  6. Step 6: Final answer
    x = 58,202.47

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1.5x scale

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.