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Finding the Fourth Proportional to 55,761.49, 76,949.48 and 31,886.63

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Solution

The fourth proportional to 55,761.49, 76,949.48 and 31,886.63 is: 44,002.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,761.49 : 76,949.48 = 31,886.63 : x
  2. Step 2: Convert to fraction form
    55,761.49/76,949.48 = 31,886.63/x
  3. Step 3: Cross multiply
    55,761.49x = 76,949.48 × 31,886.63
  4. Step 4: Simplify right side
    55,761.49x = 2,453,659,698.46
  5. Step 5: Solve for x
    x = 2,453,659,698.46/55,761.49
  6. Step 6: Final answer
    x = 44,002.76

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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.