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Finding the Fourth Proportional to 104,075.92, 143,628.25 and 63,781.90

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Solution

The fourth proportional to 104,075.92, 143,628.25 and 63,781.90 is: 88,021.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,075.92 : 143,628.25 = 63,781.90 : x
  2. Step 2: Convert to fraction form
    104,075.92/143,628.25 = 63,781.90/x
  3. Step 3: Cross multiply
    104,075.92x = 143,628.25 × 63,781.90
  4. Step 4: Simplify right side
    104,075.92x = 9,160,882,758.40
  5. Step 5: Solve for x
    x = 9,160,882,758.40/104,075.92
  6. Step 6: Final answer
    x = 88,021.16

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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.