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Finding the Fourth Proportional to 111,363.15, 153,669.64 and 68,344.46

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Solution

The fourth proportional to 111,363.15, 153,669.64 and 68,344.46 is: 94,308.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,363.15 : 153,669.64 = 68,344.46 : x
  2. Step 2: Convert to fraction form
    111,363.15/153,669.64 = 68,344.46/x
  3. Step 3: Cross multiply
    111,363.15x = 153,669.64 × 68,344.46
  4. Step 4: Simplify right side
    111,363.15x = 10,502,468,617.72
  5. Step 5: Solve for x
    x = 10,502,468,617.72/111,363.15
  6. Step 6: Final answer
    x = 94,308.29

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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.