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Finding the Fourth Proportional to 567,591.90, 783,241.11 and 312,945.18

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Solution

The fourth proportional to 567,591.90, 783,241.11 and 312,945.18 is: 431,844.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,591.90 : 783,241.11 = 312,945.18 : x
  2. Step 2: Convert to fraction form
    567,591.90/783,241.11 = 312,945.18/x
  3. Step 3: Cross multiply
    567,591.90x = 783,241.11 × 312,945.18
  4. Step 4: Simplify right side
    567,591.90x = 245,111,530,152.35
  5. Step 5: Solve for x
    x = 245,111,530,152.35/567,591.90
  6. Step 6: Final answer
    x = 431,844.66

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Double scale
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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.