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Finding the Fourth Proportional to 223,917.12, 335,870.46 and 90,761.76

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Solution

The fourth proportional to 223,917.12, 335,870.46 and 90,761.76 is: 136,140.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,917.12 : 335,870.46 = 90,761.76 : x
  2. Step 2: Convert to fraction form
    223,917.12/335,870.46 = 90,761.76/x
  3. Step 3: Cross multiply
    223,917.12x = 335,870.46 × 90,761.76
  4. Step 4: Simplify right side
    223,917.12x = 30,484,194,081.61
  5. Step 5: Solve for x
    x = 30,484,194,081.61/223,917.12
  6. Step 6: Final answer
    x = 136,140.52

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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.