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Finding the Fourth Proportional to 535,693.15, 739,265.70 and 293,998.20

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Solution

The fourth proportional to 535,693.15, 739,265.70 and 293,998.20 is: 405,722.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,693.15 : 739,265.70 = 293,998.20 : x
  2. Step 2: Convert to fraction form
    535,693.15/739,265.70 = 293,998.20/x
  3. Step 3: Cross multiply
    535,693.15x = 739,265.70 × 293,998.20
  4. Step 4: Simplify right side
    535,693.15x = 217,342,785,121.74
  5. Step 5: Solve for x
    x = 217,342,785,121.74/535,693.15
  6. Step 6: Final answer
    x = 405,722.54

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.