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Finding the Fourth Proportional to 619,914.32, 930,230.20 and 260,052.92

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Solution

The fourth proportional to 619,914.32, 930,230.20 and 260,052.92 is: 390,229.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,914.32 : 930,230.20 = 260,052.92 : x
  2. Step 2: Convert to fraction form
    619,914.32/930,230.20 = 260,052.92/x
  3. Step 3: Cross multiply
    619,914.32x = 930,230.20 × 260,052.92
  4. Step 4: Simplify right side
    619,914.32x = 241,909,079,782.18
  5. Step 5: Solve for x
    x = 241,909,079,782.18/619,914.32
  6. Step 6: Final answer
    x = 390,229.86

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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.