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Finding the Fourth Proportional to 86,534.65, 129,801.98 and 36,601.80

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Solution

The fourth proportional to 86,534.65, 129,801.98 and 36,601.80 is: 54,902.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,534.65 : 129,801.98 = 36,601.80 : x
  2. Step 2: Convert to fraction form
    86,534.65/129,801.98 = 36,601.80/x
  3. Step 3: Cross multiply
    86,534.65x = 129,801.98 × 36,601.80
  4. Step 4: Simplify right side
    86,534.65x = 4,750,986,111.56
  5. Step 5: Solve for x
    x = 4,750,986,111.56/86,534.65
  6. Step 6: Final answer
    x = 54,902.70

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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.