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Finding the Fourth Proportional to 18,649,041.71, 27,978,041.96 and 7,134,320.66

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Solution

The fourth proportional to 18,649,041.71, 27,978,041.96 and 7,134,320.66 is: 10,703,194.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,649,041.71 : 27,978,041.96 = 7,134,320.66 : x
  2. Step 2: Convert to fraction form
    18,649,041.71/27,978,041.96 = 7,134,320.66/x
  3. Step 3: Cross multiply
    18,649,041.71x = 27,978,041.96 × 7,134,320.66
  4. Step 4: Simplify right side
    18,649,041.71x = 199,604,322,606,013.06
  5. Step 5: Solve for x
    x = 199,604,322,606,013.06/18,649,041.71
  6. Step 6: Final answer
    x = 10,703,194.61

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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.