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Finding the Fourth Proportional to 123,891.93, 170,971.56 and 67,303.44

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Solution

The fourth proportional to 123,891.93, 170,971.56 and 67,303.44 is: 92,879.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,891.93 : 170,971.56 = 67,303.44 : x
  2. Step 2: Convert to fraction form
    123,891.93/170,971.56 = 67,303.44/x
  3. Step 3: Cross multiply
    123,891.93x = 170,971.56 × 67,303.44
  4. Step 4: Simplify right side
    123,891.93x = 11,506,974,130.17
  5. Step 5: Solve for x
    x = 11,506,974,130.17/123,891.93
  6. Step 6: Final answer
    x = 92,879.13

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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.