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Finding the Fourth Proportional to 251,011,993.80, 376,517,990.70 and 251,011,993.80

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Solution

The fourth proportional to 251,011,993.80, 376,517,990.70 and 251,011,993.80 is: 376,517,990.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,011,993.80 : 376,517,990.70 = 251,011,993.80 : x
  2. Step 2: Convert to fraction form
    251,011,993.80/376,517,990.70 = 251,011,993.80/x
  3. Step 3: Cross multiply
    251,011,993.80x = 376,517,990.70 × 251,011,993.80
  4. Step 4: Simplify right side
    251,011,993.80x = 94,510,531,547,176,864
  5. Step 5: Solve for x
    x = 94,510,531,547,176,864/251,011,993.80
  6. Step 6: Final answer
    x = 376,517,990.70

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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.