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Finding the Fourth Proportional to 257,553.45, 386,330.18 and 244,431.45

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Solution

The fourth proportional to 257,553.45, 386,330.18 and 244,431.45 is: 366,647.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,553.45 : 386,330.18 = 244,431.45 : x
  2. Step 2: Convert to fraction form
    257,553.45/386,330.18 = 244,431.45/x
  3. Step 3: Cross multiply
    257,553.45x = 386,330.18 × 244,431.45
  4. Step 4: Simplify right side
    257,553.45x = 94,431,244,854.00
  5. Step 5: Solve for x
    x = 94,431,244,854.00/257,553.45
  6. Step 6: Final answer
    x = 366,647.18

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1.5x scale

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.