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Finding the Fourth Proportional to 215,784,606.15, 323,676,909.23 and 215,784,606.15

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Solution

The fourth proportional to 215,784,606.15, 323,676,909.23 and 215,784,606.15 is: 323,676,909.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,784,606.15 : 323,676,909.23 = 215,784,606.15 : x
  2. Step 2: Convert to fraction form
    215,784,606.15/323,676,909.23 = 215,784,606.15/x
  3. Step 3: Cross multiply
    215,784,606.15x = 323,676,909.23 × 215,784,606.15
  4. Step 4: Simplify right side
    215,784,606.15x = 69,844,494,376,965,936
  5. Step 5: Solve for x
    x = 69,844,494,376,965,936/215,784,606.15
  6. Step 6: Final answer
    x = 323,676,909.23

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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.