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Finding the Fourth Proportional to 557,568.28, 769,429.25 and 328,139.06

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Solution

The fourth proportional to 557,568.28, 769,429.25 and 328,139.06 is: 452,823.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,568.28 : 769,429.25 = 328,139.06 : x
  2. Step 2: Convert to fraction form
    557,568.28/769,429.25 = 328,139.06/x
  3. Step 3: Cross multiply
    557,568.28x = 769,429.25 × 328,139.06
  4. Step 4: Simplify right side
    557,568.28x = 252,479,791,114.38
  5. Step 5: Solve for x
    x = 252,479,791,114.38/557,568.28
  6. Step 6: Final answer
    x = 452,823.09

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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.