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Finding the Fourth Proportional to 705,974.61, 974,251.41 and 383,685.53

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Solution

The fourth proportional to 705,974.61, 974,251.41 and 383,685.53 is: 529,489.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,974.61 : 974,251.41 = 383,685.53 : x
  2. Step 2: Convert to fraction form
    705,974.61/974,251.41 = 383,685.53/x
  3. Step 3: Cross multiply
    705,974.61x = 974,251.41 × 383,685.53
  4. Step 4: Simplify right side
    705,974.61x = 373,806,168,599.10
  5. Step 5: Solve for x
    x = 373,806,168,599.10/705,974.61
  6. Step 6: Final answer
    x = 529,489.54

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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.