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Finding the Fourth Proportional to 219,098.59, 328,656.08 and 61,322.94

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Solution

The fourth proportional to 219,098.59, 328,656.08 and 61,322.94 is: 91,986.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,098.59 : 328,656.08 = 61,322.94 : x
  2. Step 2: Convert to fraction form
    219,098.59/328,656.08 = 61,322.94/x
  3. Step 3: Cross multiply
    219,098.59x = 328,656.08 × 61,322.94
  4. Step 4: Simplify right side
    219,098.59x = 20,154,157,227.78
  5. Step 5: Solve for x
    x = 20,154,157,227.78/219,098.59
  6. Step 6: Final answer
    x = 91,986.71

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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.