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Finding the Fourth Proportional to 212,846,117.70, 319,269,176.55 and 212,846,117.70

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Solution

The fourth proportional to 212,846,117.70, 319,269,176.55 and 212,846,117.70 is: 319,269,176.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,846,117.70 : 319,269,176.55 = 212,846,117.70 : x
  2. Step 2: Convert to fraction form
    212,846,117.70/319,269,176.55 = 212,846,117.70/x
  3. Step 3: Cross multiply
    212,846,117.70x = 319,269,176.55 × 212,846,117.70
  4. Step 4: Simplify right side
    212,846,117.70x = 67,955,204,729,943,376
  5. Step 5: Solve for x
    x = 67,955,204,729,943,376/212,846,117.70
  6. Step 6: Final answer
    x = 319,269,176.55

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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.