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Finding the Fourth Proportional to 219,643.11, 329,419.71 and 61,872.93

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Solution

The fourth proportional to 219,643.11, 329,419.71 and 61,872.93 is: 92,796.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,643.11 : 329,419.71 = 61,872.93 : x
  2. Step 2: Convert to fraction form
    219,643.11/329,419.71 = 61,872.93/x
  3. Step 3: Cross multiply
    219,643.11x = 329,419.71 × 61,872.93
  4. Step 4: Simplify right side
    219,643.11x = 20,382,162,657.45
  5. Step 5: Solve for x
    x = 20,382,162,657.45/219,643.11
  6. Step 6: Final answer
    x = 92,796.73

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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.