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Finding the Fourth Proportional to 144,405.71, 216,714.99 and 68,504.48

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Solution

The fourth proportional to 144,405.71, 216,714.99 and 68,504.48 is: 102,807.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,405.71 : 216,714.99 = 68,504.48 : x
  2. Step 2: Convert to fraction form
    144,405.71/216,714.99 = 68,504.48/x
  3. Step 3: Cross multiply
    144,405.71x = 216,714.99 × 68,504.48
  4. Step 4: Simplify right side
    144,405.71x = 14,845,947,698.16
  5. Step 5: Solve for x
    x = 14,845,947,698.16/144,405.71
  6. Step 6: Final answer
    x = 102,807.21

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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.