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Finding the Fourth Proportional to 451,788.71, 623,473.22 and 247,840.02

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Solution

The fourth proportional to 451,788.71, 623,473.22 and 247,840.02 is: 342,021.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,788.71 : 623,473.22 = 247,840.02 : x
  2. Step 2: Convert to fraction form
    451,788.71/623,473.22 = 247,840.02/x
  3. Step 3: Cross multiply
    451,788.71x = 623,473.22 × 247,840.02
  4. Step 4: Simplify right side
    451,788.71x = 154,521,615,933.86
  5. Step 5: Solve for x
    x = 154,521,615,933.86/451,788.71
  6. Step 6: Final answer
    x = 342,021.87

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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.