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Finding the Fourth Proportional to 86,166.72, 129,118.05 and 57,982.50

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Solution

The fourth proportional to 86,166.72, 129,118.05 and 57,982.50 is: 86,884.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,166.72 : 129,118.05 = 57,982.50 : x
  2. Step 2: Convert to fraction form
    86,166.72/129,118.05 = 57,982.50/x
  3. Step 3: Cross multiply
    86,166.72x = 129,118.05 × 57,982.50
  4. Step 4: Simplify right side
    86,166.72x = 7,486,587,334.13
  5. Step 5: Solve for x
    x = 7,486,587,334.13/86,166.72
  6. Step 6: Final answer
    x = 86,884.91

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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.