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Finding the Fourth Proportional to 159,998.76, 220,678.57 and 111,603.18

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Solution

The fourth proportional to 159,998.76, 220,678.57 and 111,603.18 is: 153,928.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,998.76 : 220,678.57 = 111,603.18 : x
  2. Step 2: Convert to fraction form
    159,998.76/220,678.57 = 111,603.18/x
  3. Step 3: Cross multiply
    159,998.76x = 220,678.57 × 111,603.18
  4. Step 4: Simplify right side
    159,998.76x = 24,628,430,169.85
  5. Step 5: Solve for x
    x = 24,628,430,169.85/159,998.76
  6. Step 6: Final answer
    x = 153,928.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.