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Finding the Fourth Proportional to 268,568.16, 402,852.36 and 68,888.55

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Solution

The fourth proportional to 268,568.16, 402,852.36 and 68,888.55 is: 103,332.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,568.16 : 402,852.36 = 68,888.55 : x
  2. Step 2: Convert to fraction form
    268,568.16/402,852.36 = 68,888.55/x
  3. Step 3: Cross multiply
    268,568.16x = 402,852.36 × 68,888.55
  4. Step 4: Simplify right side
    268,568.16x = 27,751,914,944.48
  5. Step 5: Solve for x
    x = 27,751,914,944.48/268,568.16
  6. Step 6: Final answer
    x = 103,332.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.