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Finding the Fourth Proportional to 87,689,793.45, 122,967,264.75 and 87,689,793.45

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Solution

The fourth proportional to 87,689,793.45, 122,967,264.75 and 87,689,793.45 is: 122,967,264.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,689,793.45 : 122,967,264.75 = 87,689,793.45 : x
  2. Step 2: Convert to fraction form
    87,689,793.45/122,967,264.75 = 87,689,793.45/x
  3. Step 3: Cross multiply
    87,689,793.45x = 122,967,264.75 × 87,689,793.45
  4. Step 4: Simplify right side
    87,689,793.45x = 10,782,974,047,038,966
  5. Step 5: Solve for x
    x = 10,782,974,047,038,966/87,689,793.45
  6. Step 6: Final answer
    x = 122,967,264.75

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.