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Finding the Fourth Proportional to 705,900.39, 974,129.79 and 383,611.62

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Solution

The fourth proportional to 705,900.39, 974,129.79 and 383,611.62 is: 529,377.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,900.39 : 974,129.79 = 383,611.62 : x
  2. Step 2: Convert to fraction form
    705,900.39/974,129.79 = 383,611.62/x
  3. Step 3: Cross multiply
    705,900.39x = 974,129.79 × 383,611.62
  4. Step 4: Simplify right side
    705,900.39x = 373,687,506,832.16
  5. Step 5: Solve for x
    x = 373,687,506,832.16/705,900.39
  6. Step 6: Final answer
    x = 529,377.11

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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.