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Finding the Fourth Proportional to 147,998.70, 221,815.80 and 100,613.70

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Solution

The fourth proportional to 147,998.70, 221,815.80 and 100,613.70 is: 150,796.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,998.70 : 221,815.80 = 100,613.70 : x
  2. Step 2: Convert to fraction form
    147,998.70/221,815.80 = 100,613.70/x
  3. Step 3: Cross multiply
    147,998.70x = 221,815.80 × 100,613.70
  4. Step 4: Simplify right side
    147,998.70x = 22,317,708,356.46
  5. Step 5: Solve for x
    x = 22,317,708,356.46/147,998.70
  6. Step 6: Final answer
    x = 150,796.65

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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.