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Finding the Fourth Proportional to 123,547.95, 170,499.13 and 69,833.17

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Solution

The fourth proportional to 123,547.95, 170,499.13 and 69,833.17 is: 96,371.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,547.95 : 170,499.13 = 69,833.17 : x
  2. Step 2: Convert to fraction form
    123,547.95/170,499.13 = 69,833.17/x
  3. Step 3: Cross multiply
    123,547.95x = 170,499.13 × 69,833.17
  4. Step 4: Simplify right side
    123,547.95x = 11,906,494,768.68
  5. Step 5: Solve for x
    x = 11,906,494,768.68/123,547.95
  6. Step 6: Final answer
    x = 96,371.45

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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.