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Finding the Fourth Proportional to 99,696.07, 137,576.78 and 54,984.07

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Solution

The fourth proportional to 99,696.07, 137,576.78 and 54,984.07 is: 75,875.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,696.07 : 137,576.78 = 54,984.07 : x
  2. Step 2: Convert to fraction form
    99,696.07/137,576.78 = 54,984.07/x
  3. Step 3: Cross multiply
    99,696.07x = 137,576.78 × 54,984.07
  4. Step 4: Simplify right side
    99,696.07x = 7,564,531,026.97
  5. Step 5: Solve for x
    x = 7,564,531,026.97/99,696.07
  6. Step 6: Final answer
    x = 75,875.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.