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Finding the Fourth Proportional to 89,891.60, 134,795.48 and 26,688.51

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Solution

The fourth proportional to 89,891.60, 134,795.48 and 26,688.51 is: 40,020.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,891.60 : 134,795.48 = 26,688.51 : x
  2. Step 2: Convert to fraction form
    89,891.60/134,795.48 = 26,688.51/x
  3. Step 3: Cross multiply
    89,891.60x = 134,795.48 × 26,688.51
  4. Step 4: Simplify right side
    89,891.60x = 3,597,490,382.49
  5. Step 5: Solve for x
    x = 3,597,490,382.49/89,891.60
  6. Step 6: Final answer
    x = 40,020.32

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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.