Home / 18,780,905.25-25,917,181.83-10,520,912.79

Finding the Fourth Proportional to 18,780,905.25, 25,917,181.83 and 10,520,912.79

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Solution

The fourth proportional to 18,780,905.25, 25,917,181.83 and 10,520,912.79 is: 14,518,597.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,780,905.25 : 25,917,181.83 = 10,520,912.79 : x
  2. Step 2: Convert to fraction form
    18,780,905.25/25,917,181.83 = 10,520,912.79/x
  3. Step 3: Cross multiply
    18,780,905.25x = 25,917,181.83 × 10,520,912.79
  4. Step 4: Simplify right side
    18,780,905.25x = 272,672,409,796,002.56
  5. Step 5: Solve for x
    x = 272,672,409,796,002.56/18,780,905.25
  6. Step 6: Final answer
    x = 14,518,597.81

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1.5x scale

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.