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Finding the Fourth Proportional to 438,626.56, 605,315.52 and 247,642.72

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Solution

The fourth proportional to 438,626.56, 605,315.52 and 247,642.72 is: 341,753.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,626.56 : 605,315.52 = 247,642.72 : x
  2. Step 2: Convert to fraction form
    438,626.56/605,315.52 = 247,642.72/x
  3. Step 3: Cross multiply
    438,626.56x = 605,315.52 × 247,642.72
  4. Step 4: Simplify right side
    438,626.56x = 149,901,981,831.01
  5. Step 5: Solve for x
    x = 149,901,981,831.01/438,626.56
  6. Step 6: Final answer
    x = 341,753.09

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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.