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Finding the Fourth Proportional to 159,597.06, 220,238.73 and 87,975.78

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Solution

The fourth proportional to 159,597.06, 220,238.73 and 87,975.78 is: 121,403.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,597.06 : 220,238.73 = 87,975.78 : x
  2. Step 2: Convert to fraction form
    159,597.06/220,238.73 = 87,975.78/x
  3. Step 3: Cross multiply
    159,597.06x = 220,238.73 × 87,975.78
  4. Step 4: Simplify right side
    159,597.06x = 19,375,674,057.96
  5. Step 5: Solve for x
    x = 19,375,674,057.96/159,597.06
  6. Step 6: Final answer
    x = 121,403.70

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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.