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Finding the Fourth Proportional to 66,597,339.98, 99,894,908.58 and 19,910,934.61

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Solution

The fourth proportional to 66,597,339.98, 99,894,908.58 and 19,910,934.61 is: 29,866,072.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,597,339.98 : 99,894,908.58 = 19,910,934.61 : x
  2. Step 2: Convert to fraction form
    66,597,339.98/99,894,908.58 = 19,910,934.61/x
  3. Step 3: Cross multiply
    66,597,339.98x = 99,894,908.58 × 19,910,934.61
  4. Step 4: Simplify right side
    66,597,339.98x = 1,989,000,992,283,944.75
  5. Step 5: Solve for x
    x = 1,989,000,992,283,944.75/66,597,339.98
  6. Step 6: Final answer
    x = 29,866,072.62

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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.