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Finding the Fourth Proportional to 691,101.44, 953,722.56 and 400,769.60

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Solution

The fourth proportional to 691,101.44, 953,722.56 and 400,769.60 is: 553,063.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,101.44 : 953,722.56 = 400,769.60 : x
  2. Step 2: Convert to fraction form
    691,101.44/953,722.56 = 400,769.60/x
  3. Step 3: Cross multiply
    691,101.44x = 953,722.56 × 400,769.60
  4. Step 4: Simplify right side
    691,101.44x = 382,223,008,882.18
  5. Step 5: Solve for x
    x = 382,223,008,882.18/691,101.44
  6. Step 6: Final answer
    x = 553,063.54

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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.