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Finding the Fourth Proportional to 86,660.82, 129,965.40 and 36,740.11

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Solution

The fourth proportional to 86,660.82, 129,965.40 and 36,740.11 is: 55,099.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,660.82 : 129,965.40 = 36,740.11 : x
  2. Step 2: Convert to fraction form
    86,660.82/129,965.40 = 36,740.11/x
  3. Step 3: Cross multiply
    86,660.82x = 129,965.40 × 36,740.11
  4. Step 4: Simplify right side
    86,660.82x = 4,774,943,092.19
  5. Step 5: Solve for x
    x = 4,774,943,092.19/86,660.82
  6. Step 6: Final answer
    x = 55,099.21

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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.