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Finding the Fourth Proportional to 978,321.24, 1,350,097.27 and 591,082.92

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Solution

The fourth proportional to 978,321.24, 1,350,097.27 and 591,082.92 is: 815,702.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,321.24 : 1,350,097.27 = 591,082.92 : x
  2. Step 2: Convert to fraction form
    978,321.24/1,350,097.27 = 591,082.92/x
  3. Step 3: Cross multiply
    978,321.24x = 1,350,097.27 × 591,082.92
  4. Step 4: Simplify right side
    978,321.24x = 798,019,435,157.92
  5. Step 5: Solve for x
    x = 798,019,435,157.92/978,321.24
  6. Step 6: Final answer
    x = 815,702.86

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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.