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Finding the Fourth Proportional to 18,100,119.79, 24,978,657.61 and 9,840,737.51

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Solution

The fourth proportional to 18,100,119.79, 24,978,657.61 and 9,840,737.51 is: 13,580,485.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,100,119.79 : 24,978,657.61 = 9,840,737.51 : x
  2. Step 2: Convert to fraction form
    18,100,119.79/24,978,657.61 = 9,840,737.51/x
  3. Step 3: Cross multiply
    18,100,119.79x = 24,978,657.61 × 9,840,737.51
  4. Step 4: Simplify right side
    18,100,119.79x = 245,808,412,873,251.50
  5. Step 5: Solve for x
    x = 245,808,412,873,251.50/18,100,119.79
  6. Step 6: Final answer
    x = 13,580,485.42

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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.