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Finding the Fourth Proportional to 218,795.16, 328,248.11 and 61,023.62

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Solution

The fourth proportional to 218,795.16, 328,248.11 and 61,023.62 is: 91,550.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,795.16 : 328,248.11 = 61,023.62 : x
  2. Step 2: Convert to fraction form
    218,795.16/328,248.11 = 61,023.62/x
  3. Step 3: Cross multiply
    218,795.16x = 328,248.11 × 61,023.62
  4. Step 4: Simplify right side
    218,795.16x = 20,030,886,441.68
  5. Step 5: Solve for x
    x = 20,030,886,441.68/218,795.16
  6. Step 6: Final answer
    x = 91,550.87

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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.