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Finding the Fourth Proportional to 89,139,286.20, 133,708,929.30 and 89,139,286.20

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Solution

The fourth proportional to 89,139,286.20, 133,708,929.30 and 89,139,286.20 is: 133,708,929.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,139,286.20 : 133,708,929.30 = 89,139,286.20 : x
  2. Step 2: Convert to fraction form
    89,139,286.20/133,708,929.30 = 89,139,286.20/x
  3. Step 3: Cross multiply
    89,139,286.20x = 133,708,929.30 × 89,139,286.20
  4. Step 4: Simplify right side
    89,139,286.20x = 11,918,718,516,368,266
  5. Step 5: Solve for x
    x = 11,918,718,516,368,266/89,139,286.20
  6. Step 6: Final answer
    x = 133,708,929.30

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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.