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Finding the Third Proportional to 1,919,699,881.50 and 2,866,970,197.50

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Solution

The third proportional to 1,919,699,881.50 and 2,866,970,197.50 is: 4,281,668,292.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,919,699,881.50 : 2,866,970,197.50 = 2,866,970,197.50 : x
  2. Step 2: Convert to fraction form
    1,919,699,881.50/2,866,970,197.50 = 2,866,970,197.50/x
  3. Step 3: Cross multiply
    1,919,699,881.50x = 2,866,970,197.50 × 2,866,970,197.50
  4. Step 4: Simplify right side
    1,919,699,881.50x = 8,219,518,113,353,189,376
  5. Step 5: Solve for x
    x = 8,219,518,113,353,189,376/1,919,699,881.50
  6. Step 6: Final answer
    x = 4,281,668,292.30

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.