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Finding the Fourth Proportional to 104,075.76, 143,686.44 and 68,328.44

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Solution

The fourth proportional to 104,075.76, 143,686.44 and 68,328.44 is: 94,333.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,075.76 : 143,686.44 = 68,328.44 : x
  2. Step 2: Convert to fraction form
    104,075.76/143,686.44 = 68,328.44/x
  3. Step 3: Cross multiply
    104,075.76x = 143,686.44 × 68,328.44
  4. Step 4: Simplify right side
    104,075.76x = 9,817,869,575.92
  5. Step 5: Solve for x
    x = 9,817,869,575.92/104,075.76
  6. Step 6: Final answer
    x = 94,333.87

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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.