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Finding the Fourth Proportional to 212,994,023.40, 319,491,035.10 and 212,994,023.40

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Solution

The fourth proportional to 212,994,023.40, 319,491,035.10 and 212,994,023.40 is: 319,491,035.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,994,023.40 : 319,491,035.10 = 212,994,023.40 : x
  2. Step 2: Convert to fraction form
    212,994,023.40/319,491,035.10 = 212,994,023.40/x
  3. Step 3: Cross multiply
    212,994,023.40x = 319,491,035.10 × 212,994,023.40
  4. Step 4: Simplify right side
    212,994,023.40x = 68,049,681,006,179,632
  5. Step 5: Solve for x
    x = 68,049,681,006,179,632/212,994,023.40
  6. Step 6: Final answer
    x = 319,491,035.10

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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.