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Finding the Fourth Proportional to 218,798.80, 328,253.55 and 61,027.24

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Solution

The fourth proportional to 218,798.80, 328,253.55 and 61,027.24 is: 91,556.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,798.80 : 328,253.55 = 61,027.24 : x
  2. Step 2: Convert to fraction form
    218,798.80/328,253.55 = 61,027.24/x
  3. Step 3: Cross multiply
    218,798.80x = 328,253.55 × 61,027.24
  4. Step 4: Simplify right side
    218,798.80x = 20,032,408,176.70
  5. Step 5: Solve for x
    x = 20,032,408,176.70/218,798.80
  6. Step 6: Final answer
    x = 91,556.30

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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.