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Finding the Fourth Proportional to 438,613.75, 605,288.80 and 237,409.75

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Solution

The fourth proportional to 438,613.75, 605,288.80 and 237,409.75 is: 327,626.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,613.75 : 605,288.80 = 237,409.75 : x
  2. Step 2: Convert to fraction form
    438,613.75/605,288.80 = 237,409.75/x
  3. Step 3: Cross multiply
    438,613.75x = 605,288.80 × 237,409.75
  4. Step 4: Simplify right side
    438,613.75x = 143,701,462,685.80
  5. Step 5: Solve for x
    x = 143,701,462,685.80/438,613.75
  6. Step 6: Final answer
    x = 327,626.44

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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.