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Finding the Fourth Proportional to 583,400.70, 875,101.05 and 394,443.90

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Solution

The fourth proportional to 583,400.70, 875,101.05 and 394,443.90 is: 591,665.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    583,400.70 : 875,101.05 = 394,443.90 : x
  2. Step 2: Convert to fraction form
    583,400.70/875,101.05 = 394,443.90/x
  3. Step 3: Cross multiply
    583,400.70x = 875,101.05 × 394,443.90
  4. Step 4: Simplify right side
    583,400.70x = 345,178,271,056.10
  5. Step 5: Solve for x
    x = 345,178,271,056.10/583,400.70
  6. Step 6: Final answer
    x = 591,665.85

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.