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Finding the Fourth Proportional to 144,689.20, 217,066.20 and 55,934.80

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Solution

The fourth proportional to 144,689.20, 217,066.20 and 55,934.80 is: 83,914.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,689.20 : 217,066.20 = 55,934.80 : x
  2. Step 2: Convert to fraction form
    144,689.20/217,066.20 = 55,934.80/x
  3. Step 3: Cross multiply
    144,689.20x = 217,066.20 × 55,934.80
  4. Step 4: Simplify right side
    144,689.20x = 12,141,554,483.76
  5. Step 5: Solve for x
    x = 12,141,554,483.76/144,689.20
  6. Step 6: Final answer
    x = 83,914.73

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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.