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Finding the Fourth Proportional to 612,593.92, 918,890.16 and 191,902.56

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Solution

The fourth proportional to 612,593.92, 918,890.16 and 191,902.56 is: 287,853.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,593.92 : 918,890.16 = 191,902.56 : x
  2. Step 2: Convert to fraction form
    612,593.92/918,890.16 = 191,902.56/x
  3. Step 3: Cross multiply
    612,593.92x = 918,890.16 × 191,902.56
  4. Step 4: Simplify right side
    612,593.92x = 176,337,374,062.81
  5. Step 5: Solve for x
    x = 176,337,374,062.81/612,593.92
  6. Step 6: Final answer
    x = 287,853.61

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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.