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Finding the Fourth Proportional to 257,968.80, 356,016.06 and 155,998.17

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Solution

The fourth proportional to 257,968.80, 356,016.06 and 155,998.17 is: 215,289.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,968.80 : 356,016.06 = 155,998.17 : x
  2. Step 2: Convert to fraction form
    257,968.80/356,016.06 = 155,998.17/x
  3. Step 3: Cross multiply
    257,968.80x = 356,016.06 × 155,998.17
  4. Step 4: Simplify right side
    257,968.80x = 55,537,853,850.61
  5. Step 5: Solve for x
    x = 55,537,853,850.61/257,968.80
  6. Step 6: Final answer
    x = 215,289.03

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1.5x scale

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.