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Finding the Fourth Proportional to 74,492.60, 111,740.12 and 18,332.87

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Solution

The fourth proportional to 74,492.60, 111,740.12 and 18,332.87 is: 27,499.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,492.60 : 111,740.12 = 18,332.87 : x
  2. Step 2: Convert to fraction form
    74,492.60/111,740.12 = 18,332.87/x
  3. Step 3: Cross multiply
    74,492.60x = 111,740.12 × 18,332.87
  4. Step 4: Simplify right side
    74,492.60x = 2,048,517,093.74
  5. Step 5: Solve for x
    x = 2,048,517,093.74/74,492.60
  6. Step 6: Final answer
    x = 27,499.61

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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.