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Finding the Fourth Proportional to 86,574.30, 129,834.45 and 33,999.90

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Solution

The fourth proportional to 86,574.30, 129,834.45 and 33,999.90 is: 50,989.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,574.30 : 129,834.45 = 33,999.90 : x
  2. Step 2: Convert to fraction form
    86,574.30/129,834.45 = 33,999.90/x
  3. Step 3: Cross multiply
    86,574.30x = 129,834.45 × 33,999.90
  4. Step 4: Simplify right side
    86,574.30x = 4,414,358,316.56
  5. Step 5: Solve for x
    x = 4,414,358,316.56/86,574.30
  6. Step 6: Final answer
    x = 50,989.25

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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.