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Finding the Fourth Proportional to 86,535.67, 129,827.40 and 36,589.45

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Solution

The fourth proportional to 86,535.67, 129,827.40 and 36,589.45 is: 54,894.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,535.67 : 129,827.40 = 36,589.45 : x
  2. Step 2: Convert to fraction form
    86,535.67/129,827.40 = 36,589.45/x
  3. Step 3: Cross multiply
    86,535.67x = 129,827.40 × 36,589.45
  4. Step 4: Simplify right side
    86,535.67x = 4,750,313,160.93
  5. Step 5: Solve for x
    x = 4,750,313,160.93/86,535.67
  6. Step 6: Final answer
    x = 54,894.28

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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.