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Finding the Fourth Proportional to 705,974.36, 974,251.06 and 383,685.28

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Solution

The fourth proportional to 705,974.36, 974,251.06 and 383,685.28 is: 529,489.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,974.36 : 974,251.06 = 383,685.28 : x
  2. Step 2: Convert to fraction form
    705,974.36/974,251.06 = 383,685.28/x
  3. Step 3: Cross multiply
    705,974.36x = 974,251.06 × 383,685.28
  4. Step 4: Simplify right side
    705,974.36x = 373,805,787,351.56
  5. Step 5: Solve for x
    x = 373,805,787,351.56/705,974.36
  6. Step 6: Final answer
    x = 529,489.19

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Double scale
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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.