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Finding the Fourth Proportional to 89,336,083.20, 133,720,689.60 and 89,336,083.20

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Solution

The fourth proportional to 89,336,083.20, 133,720,689.60 and 89,336,083.20 is: 133,720,689.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,336,083.20 : 133,720,689.60 = 89,336,083.20 : x
  2. Step 2: Convert to fraction form
    89,336,083.20/133,720,689.60 = 89,336,083.20/x
  3. Step 3: Cross multiply
    89,336,083.20x = 133,720,689.60 × 89,336,083.20
  4. Step 4: Simplify right side
    89,336,083.20x = 11,946,082,651,666,974
  5. Step 5: Solve for x
    x = 11,946,082,651,666,974/89,336,083.20
  6. Step 6: Final answer
    x = 133,720,689.60

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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.