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Finding the Fourth Proportional to 928,693.80, 1,393,040.70 and 397,252.80

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Solution

The fourth proportional to 928,693.80, 1,393,040.70 and 397,252.80 is: 595,879.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    928,693.80 : 1,393,040.70 = 397,252.80 : x
  2. Step 2: Convert to fraction form
    928,693.80/1,393,040.70 = 397,252.80/x
  3. Step 3: Cross multiply
    928,693.80x = 1,393,040.70 × 397,252.80
  4. Step 4: Simplify right side
    928,693.80x = 553,389,318,588.96
  5. Step 5: Solve for x
    x = 553,389,318,588.96/928,693.80
  6. Step 6: Final answer
    x = 595,879.20

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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.