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Finding the Fourth Proportional to 96,689.40, 133,439.40 and 53,672.94

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Solution

The fourth proportional to 96,689.40, 133,439.40 and 53,672.94 is: 74,073.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,689.40 : 133,439.40 = 53,672.94 : x
  2. Step 2: Convert to fraction form
    96,689.40/133,439.40 = 53,672.94/x
  3. Step 3: Cross multiply
    96,689.40x = 133,439.40 × 53,672.94
  4. Step 4: Simplify right side
    96,689.40x = 7,162,084,909.84
  5. Step 5: Solve for x
    x = 7,162,084,909.84/96,689.40
  6. Step 6: Final answer
    x = 74,073.11

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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.