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Finding the Fourth Proportional to 690,952.56, 953,516.52 and 400,620.48

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Solution

The fourth proportional to 690,952.56, 953,516.52 and 400,620.48 is: 552,857.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,952.56 : 953,516.52 = 400,620.48 : x
  2. Step 2: Convert to fraction form
    690,952.56/953,516.52 = 400,620.48/x
  3. Step 3: Cross multiply
    690,952.56x = 953,516.52 × 400,620.48
  4. Step 4: Simplify right side
    690,952.56x = 381,998,245,930.33
  5. Step 5: Solve for x
    x = 381,998,245,930.33/690,952.56
  6. Step 6: Final answer
    x = 552,857.41

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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.