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Finding the Fourth Proportional to 21,273,491.70, 31,910,237.55 and 21,273,491.70

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Solution

The fourth proportional to 21,273,491.70, 31,910,237.55 and 21,273,491.70 is: 31,910,237.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,273,491.70 : 31,910,237.55 = 21,273,491.70 : x
  2. Step 2: Convert to fraction form
    21,273,491.70/31,910,237.55 = 21,273,491.70/x
  3. Step 3: Cross multiply
    21,273,491.70x = 31,910,237.55 × 21,273,491.70
  4. Step 4: Simplify right side
    21,273,491.70x = 678,842,173,664,953.38
  5. Step 5: Solve for x
    x = 678,842,173,664,953.38/21,273,491.70
  6. Step 6: Final answer
    x = 31,910,237.55

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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.