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Finding the Fourth Proportional to 526,082.40, 789,123.60 and 193,615.20

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Solution

The fourth proportional to 526,082.40, 789,123.60 and 193,615.20 is: 290,422.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,082.40 : 789,123.60 = 193,615.20 : x
  2. Step 2: Convert to fraction form
    526,082.40/789,123.60 = 193,615.20/x
  3. Step 3: Cross multiply
    526,082.40x = 789,123.60 × 193,615.20
  4. Step 4: Simplify right side
    526,082.40x = 152,786,323,638.72
  5. Step 5: Solve for x
    x = 152,786,323,638.72/526,082.40
  6. Step 6: Final answer
    x = 290,422.80

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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.