Home / 43,178,979.87-64,786,371.89-18,905,377.95

Finding the Fourth Proportional to 43,178,979.87, 64,786,371.89 and 18,905,377.95

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Solution

The fourth proportional to 43,178,979.87, 64,786,371.89 and 18,905,377.95 is: 28,365,905.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,178,979.87 : 64,786,371.89 = 18,905,377.95 : x
  2. Step 2: Convert to fraction form
    43,178,979.87/64,786,371.89 = 18,905,377.95/x
  3. Step 3: Cross multiply
    43,178,979.87x = 64,786,371.89 × 18,905,377.95
  4. Step 4: Simplify right side
    43,178,979.87x = 1,224,810,846,495,178.75
  5. Step 5: Solve for x
    x = 1,224,810,846,495,178.75/43,178,979.87
  6. Step 6: Final answer
    x = 28,365,905.13

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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.