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Finding the Fourth Proportional to 144,573.72, 216,934.70 and 69,757.66

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Solution

The fourth proportional to 144,573.72, 216,934.70 and 69,757.66 is: 104,672.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,573.72 : 216,934.70 = 69,757.66 : x
  2. Step 2: Convert to fraction form
    144,573.72/216,934.70 = 69,757.66/x
  3. Step 3: Cross multiply
    144,573.72x = 216,934.70 × 69,757.66
  4. Step 4: Simplify right side
    144,573.72x = 15,132,857,044.80
  5. Step 5: Solve for x
    x = 15,132,857,044.80/144,573.72
  6. Step 6: Final answer
    x = 104,672.25

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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.