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Finding the Fourth Proportional to 589,866,801.62, 884,916,760.70 and 216,378,155.21

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Solution

The fourth proportional to 589,866,801.62, 884,916,760.70 and 216,378,155.21 is: 324,609,989.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    589,866,801.62 : 884,916,760.70 = 216,378,155.21 : x
  2. Step 2: Convert to fraction form
    589,866,801.62/884,916,760.70 = 216,378,155.21/x
  3. Step 3: Cross multiply
    589,866,801.62x = 884,916,760.70 × 216,378,155.21
  4. Step 4: Simplify right side
    589,866,801.62x = 191,476,656,195,215,968
  5. Step 5: Solve for x
    x = 191,476,656,195,215,968/589,866,801.62
  6. Step 6: Final answer
    x = 324,609,989.36

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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.