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Finding the Fourth Proportional to 219,833.55, 329,740.07 and 91,696.95

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Solution

The fourth proportional to 219,833.55, 329,740.07 and 91,696.95 is: 137,541.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,833.55 : 329,740.07 = 91,696.95 : x
  2. Step 2: Convert to fraction form
    219,833.55/329,740.07 = 91,696.95/x
  3. Step 3: Cross multiply
    219,833.55x = 329,740.07 × 91,696.95
  4. Step 4: Simplify right side
    219,833.55x = 30,236,158,253.30
  5. Step 5: Solve for x
    x = 30,236,158,253.30/219,833.55
  6. Step 6: Final answer
    x = 137,541.15

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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.