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Finding the Fourth Proportional to 245,451.60, 368,178.30 and 74,674.98

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Solution

The fourth proportional to 245,451.60, 368,178.30 and 74,674.98 is: 112,012.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,451.60 : 368,178.30 = 74,674.98 : x
  2. Step 2: Convert to fraction form
    245,451.60/368,178.30 = 74,674.98/x
  3. Step 3: Cross multiply
    245,451.60x = 368,178.30 × 74,674.98
  4. Step 4: Simplify right side
    245,451.60x = 27,493,707,188.93
  5. Step 5: Solve for x
    x = 27,493,707,188.93/245,451.60
  6. Step 6: Final answer
    x = 112,012.74

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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.