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Finding the Fourth Proportional to 517,853.52, 714,535.56 and 327,128.40

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Solution

The fourth proportional to 517,853.52, 714,535.56 and 327,128.40 is: 451,372.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,853.52 : 714,535.56 = 327,128.40 : x
  2. Step 2: Convert to fraction form
    517,853.52/714,535.56 = 327,128.40/x
  3. Step 3: Cross multiply
    517,853.52x = 714,535.56 × 327,128.40
  4. Step 4: Simplify right side
    517,853.52x = 233,744,874,485.90
  5. Step 5: Solve for x
    x = 233,744,874,485.90/517,853.52
  6. Step 6: Final answer
    x = 451,372.57

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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.