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Finding the Fourth Proportional to 212,954,401.35, 319,431,602.03 and 212,954,401.35

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Solution

The fourth proportional to 212,954,401.35, 319,431,602.03 and 212,954,401.35 is: 319,431,602.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,954,401.35 : 319,431,602.03 = 212,954,401.35 : x
  2. Step 2: Convert to fraction form
    212,954,401.35/319,431,602.03 = 212,954,401.35/x
  3. Step 3: Cross multiply
    212,954,401.35x = 319,431,602.03 × 212,954,401.35
  4. Step 4: Simplify right side
    212,954,401.35x = 68,024,365,581,505,312
  5. Step 5: Solve for x
    x = 68,024,365,581,505,312/212,954,401.35
  6. Step 6: Final answer
    x = 319,431,602.03

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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.