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Finding the Fourth Proportional to 99,863.40, 149,816.70 and 33,292.20

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Solution

The fourth proportional to 99,863.40, 149,816.70 and 33,292.20 is: 49,945.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,863.40 : 149,816.70 = 33,292.20 : x
  2. Step 2: Convert to fraction form
    99,863.40/149,816.70 = 33,292.20/x
  3. Step 3: Cross multiply
    99,863.40x = 149,816.70 × 33,292.20
  4. Step 4: Simplify right side
    99,863.40x = 4,987,727,539.74
  5. Step 5: Solve for x
    x = 4,987,727,539.74/99,863.40
  6. Step 6: Final answer
    x = 49,945.50

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Double scale
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Similar ratio
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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.