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Finding the Fourth Proportional to 69,703,497.60, 104,555,246.40 and 66,568,214.40

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Solution

The fourth proportional to 69,703,497.60, 104,555,246.40 and 66,568,214.40 is: 99,852,321.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,703,497.60 : 104,555,246.40 = 66,568,214.40 : x
  2. Step 2: Convert to fraction form
    69,703,497.60/104,555,246.40 = 66,568,214.40/x
  3. Step 3: Cross multiply
    69,703,497.60x = 104,555,246.40 × 66,568,214.40
  4. Step 4: Simplify right side
    69,703,497.60x = 6,960,056,059,000,028
  5. Step 5: Solve for x
    x = 6,960,056,059,000,028/69,703,497.60
  6. Step 6: Final answer
    x = 99,852,321.60

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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.