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Finding the Fourth Proportional to 104,801.76, 144,625.20 and 69,043.68

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Solution

The fourth proportional to 104,801.76, 144,625.20 and 69,043.68 is: 95,279.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,801.76 : 144,625.20 = 69,043.68 : x
  2. Step 2: Convert to fraction form
    104,801.76/144,625.20 = 69,043.68/x
  3. Step 3: Cross multiply
    104,801.76x = 144,625.20 × 69,043.68
  4. Step 4: Simplify right side
    104,801.76x = 9,985,456,028.74
  5. Step 5: Solve for x
    x = 9,985,456,028.74/104,801.76
  6. Step 6: Final answer
    x = 95,279.47

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1.5x scale

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.