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Finding the Fourth Proportional to 648,906.70, 973,360.05 and 383,186.20

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Solution

The fourth proportional to 648,906.70, 973,360.05 and 383,186.20 is: 574,779.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,906.70 : 973,360.05 = 383,186.20 : x
  2. Step 2: Convert to fraction form
    648,906.70/973,360.05 = 383,186.20/x
  3. Step 3: Cross multiply
    648,906.70x = 973,360.05 × 383,186.20
  4. Step 4: Simplify right side
    648,906.70x = 372,978,138,791.31
  5. Step 5: Solve for x
    x = 372,978,138,791.31/648,906.70
  6. Step 6: Final answer
    x = 574,779.30

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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.