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Finding the Fourth Proportional to 7,903,863.90, 11,823,318.90 and 6,309,540.90

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Solution

The fourth proportional to 7,903,863.90, 11,823,318.90 and 6,309,540.90 is: 9,438,385.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,903,863.90 : 11,823,318.90 = 6,309,540.90 : x
  2. Step 2: Convert to fraction form
    7,903,863.90/11,823,318.90 = 6,309,540.90/x
  3. Step 3: Cross multiply
    7,903,863.90x = 11,823,318.90 × 6,309,540.90
  4. Step 4: Simplify right side
    7,903,863.90x = 74,599,714,173,293.02
  5. Step 5: Solve for x
    x = 74,599,714,173,293.02/7,903,863.90
  6. Step 6: Final answer
    x = 9,438,385.47

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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.