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Finding the Fourth Proportional to 467,085.78, 644,580.34 and 263,139.15

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Solution

The fourth proportional to 467,085.78, 644,580.34 and 263,139.15 is: 363,133.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    467,085.78 : 644,580.34 = 263,139.15 : x
  2. Step 2: Convert to fraction form
    467,085.78/644,580.34 = 263,139.15/x
  3. Step 3: Cross multiply
    467,085.78x = 644,580.34 × 263,139.15
  4. Step 4: Simplify right side
    467,085.78x = 169,614,319,551.41
  5. Step 5: Solve for x
    x = 169,614,319,551.41/467,085.78
  6. Step 6: Final answer
    x = 363,133.13

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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.