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Finding the Fourth Proportional to 7,168,986.60, 10,753,479.90 and 2,680,679.40

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Solution

The fourth proportional to 7,168,986.60, 10,753,479.90 and 2,680,679.40 is: 4,021,019.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,168,986.60 : 10,753,479.90 = 2,680,679.40 : x
  2. Step 2: Convert to fraction form
    7,168,986.60/10,753,479.90 = 2,680,679.40/x
  3. Step 3: Cross multiply
    7,168,986.60x = 10,753,479.90 × 2,680,679.40
  4. Step 4: Simplify right side
    7,168,986.60x = 28,826,632,046,244.06
  5. Step 5: Solve for x
    x = 28,826,632,046,244.06/7,168,986.60
  6. Step 6: Final answer
    x = 4,021,019.10

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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.