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Finding the Fourth Proportional to 253,403,976, 349,697,487 and 137,510,472

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Solution

The fourth proportional to 253,403,976, 349,697,487 and 137,510,472 is: 189,764,451.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,403,976 : 349,697,487 = 137,510,472 : x
  2. Step 2: Convert to fraction form
    253,403,976/349,697,487 = 137,510,472/x
  3. Step 3: Cross multiply
    253,403,976x = 349,697,487 × 137,510,472
  4. Step 4: Simplify right side
    253,403,976x = 48,087,066,494,583,864
  5. Step 5: Solve for x
    x = 48,087,066,494,583,864/253,403,976
  6. Step 6: Final answer
    x = 189,764,451.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.