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Finding the Fourth Proportional to 55,765.58, 76,956.63 and 30,616.70

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Solution

The fourth proportional to 55,765.58, 76,956.63 and 30,616.70 is: 42,251.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,765.58 : 76,956.63 = 30,616.70 : x
  2. Step 2: Convert to fraction form
    55,765.58/76,956.63 = 30,616.70/x
  3. Step 3: Cross multiply
    55,765.58x = 76,956.63 × 30,616.70
  4. Step 4: Simplify right side
    55,765.58x = 2,356,158,053.72
  5. Step 5: Solve for x
    x = 2,356,158,053.72/55,765.58
  6. Step 6: Final answer
    x = 42,251.12

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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.