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Finding the Fourth Proportional to 144,591.51, 216,824.33 and 68,712.06

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Solution

The fourth proportional to 144,591.51, 216,824.33 and 68,712.06 is: 103,038.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,591.51 : 216,824.33 = 68,712.06 : x
  2. Step 2: Convert to fraction form
    144,591.51/216,824.33 = 68,712.06/x
  3. Step 3: Cross multiply
    144,591.51x = 216,824.33 × 68,712.06
  4. Step 4: Simplify right side
    144,591.51x = 14,898,446,544.20
  5. Step 5: Solve for x
    x = 14,898,446,544.20/144,591.51
  6. Step 6: Final answer
    x = 103,038.18

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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.