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Finding the Fourth Proportional to 393,535.40, 543,159.56 and 250,267.76

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Solution

The fourth proportional to 393,535.40, 543,159.56 and 250,267.76 is: 345,420.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,535.40 : 543,159.56 = 250,267.76 : x
  2. Step 2: Convert to fraction form
    393,535.40/543,159.56 = 250,267.76/x
  3. Step 3: Cross multiply
    393,535.40x = 543,159.56 × 250,267.76
  4. Step 4: Simplify right side
    393,535.40x = 135,935,326,403.79
  5. Step 5: Solve for x
    x = 135,935,326,403.79/393,535.40
  6. Step 6: Final answer
    x = 345,420.83

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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.