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Finding the Fourth Proportional to 134,690.96, 185,874.84 and 74,263.76

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Solution

The fourth proportional to 134,690.96, 185,874.84 and 74,263.76 is: 102,484.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,690.96 : 185,874.84 = 74,263.76 : x
  2. Step 2: Convert to fraction form
    134,690.96/185,874.84 = 74,263.76/x
  3. Step 3: Cross multiply
    134,690.96x = 185,874.84 × 74,263.76
  4. Step 4: Simplify right side
    134,690.96x = 13,803,764,507.80
  5. Step 5: Solve for x
    x = 13,803,764,507.80/134,690.96
  6. Step 6: Final answer
    x = 102,484.71

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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.