Home / 206,915,621.58-285,436,697.76-128,569,408.38

Finding the Fourth Proportional to 206,915,621.58, 285,436,697.76 and 128,569,408.38

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Solution

The fourth proportional to 206,915,621.58, 285,436,697.76 and 128,569,408.38 is: 177,359,384.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,915,621.58 : 285,436,697.76 = 128,569,408.38 : x
  2. Step 2: Convert to fraction form
    206,915,621.58/285,436,697.76 = 128,569,408.38/x
  3. Step 3: Cross multiply
    206,915,621.58x = 285,436,697.76 × 128,569,408.38
  4. Step 4: Simplify right side
    206,915,621.58x = 36,698,427,360,944,072
  5. Step 5: Solve for x
    x = 36,698,427,360,944,072/206,915,621.58
  6. Step 6: Final answer
    x = 177,359,384.86

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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.