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Finding the Fourth Proportional to 219,291.59, 328,947.11 and 61,516.55

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Solution

The fourth proportional to 219,291.59, 328,947.11 and 61,516.55 is: 92,277.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,291.59 : 328,947.11 = 61,516.55 : x
  2. Step 2: Convert to fraction form
    219,291.59/328,947.11 = 61,516.55/x
  3. Step 3: Cross multiply
    219,291.59x = 328,947.11 × 61,516.55
  4. Step 4: Simplify right side
    219,291.59x = 20,235,689,387.35
  5. Step 5: Solve for x
    x = 20,235,689,387.35/219,291.59
  6. Step 6: Final answer
    x = 92,277.55

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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.