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Finding the Fourth Proportional to 438,687.60, 605,390.82 and 237,483.60

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Solution

The fourth proportional to 438,687.60, 605,390.82 and 237,483.60 is: 327,728.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,687.60 : 605,390.82 = 237,483.60 : x
  2. Step 2: Convert to fraction form
    438,687.60/605,390.82 = 237,483.60/x
  3. Step 3: Cross multiply
    438,687.60x = 605,390.82 × 237,483.60
  4. Step 4: Simplify right side
    438,687.60x = 143,770,391,340.55
  5. Step 5: Solve for x
    x = 143,770,391,340.55/438,687.60
  6. Step 6: Final answer
    x = 327,728.41

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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.