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Finding the Fourth Proportional to 2,115,280,499.30, 3,172,920,748.95 and 2,115,280,499.30

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Solution

The fourth proportional to 2,115,280,499.30, 3,172,920,748.95 and 2,115,280,499.30 is: 3,172,920,748.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115,280,499.30 : 3,172,920,748.95 = 2,115,280,499.30 : x
  2. Step 2: Convert to fraction form
    2,115,280,499.30/3,172,920,748.95 = 2,115,280,499.30/x
  3. Step 3: Cross multiply
    2,115,280,499.30x = 3,172,920,748.95 × 2,115,280,499.30
  4. Step 4: Simplify right side
    2,115,280,499.30x = 6,711,617,386,078,285,824
  5. Step 5: Solve for x
    x = 6,711,617,386,078,285,824/2,115,280,499.30
  6. Step 6: Final answer
    x = 3,172,920,748.95

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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.