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Finding the Fourth Proportional to 169,378.92, 254,068.36 and 44,721

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Solution

The fourth proportional to 169,378.92, 254,068.36 and 44,721 is: 67,081.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,378.92 : 254,068.36 = 44,721 : x
  2. Step 2: Convert to fraction form
    169,378.92/254,068.36 = 44,721/x
  3. Step 3: Cross multiply
    169,378.92x = 254,068.36 × 44,721
  4. Step 4: Simplify right side
    169,378.92x = 11,362,191,127.56
  5. Step 5: Solve for x
    x = 11,362,191,127.56/169,378.92
  6. Step 6: Final answer
    x = 67,081.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.