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Finding the Fourth Proportional to 29,992,857.60, 44,989,286.40 and 21,971,251.20

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Solution

The fourth proportional to 29,992,857.60, 44,989,286.40 and 21,971,251.20 is: 32,956,876.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,992,857.60 : 44,989,286.40 = 21,971,251.20 : x
  2. Step 2: Convert to fraction form
    29,992,857.60/44,989,286.40 = 21,971,251.20/x
  3. Step 3: Cross multiply
    29,992,857.60x = 44,989,286.40 × 21,971,251.20
  4. Step 4: Simplify right side
    29,992,857.60x = 988,470,912,803,143.62
  5. Step 5: Solve for x
    x = 988,470,912,803,143.62/29,992,857.60
  6. Step 6: Final answer
    x = 32,956,876.80

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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.