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Finding the Fourth Proportional to 7,261,661.80, 10,892,492.70 and 2,212,964.20

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Solution

The fourth proportional to 7,261,661.80, 10,892,492.70 and 2,212,964.20 is: 3,319,446.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,261,661.80 : 10,892,492.70 = 2,212,964.20 : x
  2. Step 2: Convert to fraction form
    7,261,661.80/10,892,492.70 = 2,212,964.20/x
  3. Step 3: Cross multiply
    7,261,661.80x = 10,892,492.70 × 2,212,964.20
  4. Step 4: Simplify right side
    7,261,661.80x = 24,104,696,393,861.34
  5. Step 5: Solve for x
    x = 24,104,696,393,861.34/7,261,661.80
  6. Step 6: Final answer
    x = 3,319,446.30

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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.