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Finding the Fourth Proportional to 11,459,950.80, 15,816,978.60 and 6,568,451.40

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Solution

The fourth proportional to 11,459,950.80, 15,816,978.60 and 6,568,451.40 is: 9,065,750.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,459,950.80 : 15,816,978.60 = 6,568,451.40 : x
  2. Step 2: Convert to fraction form
    11,459,950.80/15,816,978.60 = 6,568,451.40/x
  3. Step 3: Cross multiply
    11,459,950.80x = 15,816,978.60 × 6,568,451.40
  4. Step 4: Simplify right side
    11,459,950.80x = 103,893,055,228,940.05
  5. Step 5: Solve for x
    x = 103,893,055,228,940.05/11,459,950.80
  6. Step 6: Final answer
    x = 9,065,750.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.