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Finding the Fourth Proportional to 170,850.16, 235,759.72 and 99,218.48

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Solution

The fourth proportional to 170,850.16, 235,759.72 and 99,218.48 is: 136,913.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,850.16 : 235,759.72 = 99,218.48 : x
  2. Step 2: Convert to fraction form
    170,850.16/235,759.72 = 99,218.48/x
  3. Step 3: Cross multiply
    170,850.16x = 235,759.72 × 99,218.48
  4. Step 4: Simplify right side
    170,850.16x = 23,391,721,063.63
  5. Step 5: Solve for x
    x = 23,391,721,063.63/170,850.16
  6. Step 6: Final answer
    x = 136,913.66

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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.