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Finding the Fourth Proportional to 89,803.64, 134,719.31 and 30,625.47

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Solution

The fourth proportional to 89,803.64, 134,719.31 and 30,625.47 is: 45,942.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,803.64 : 134,719.31 = 30,625.47 : x
  2. Step 2: Convert to fraction form
    89,803.64/134,719.31 = 30,625.47/x
  3. Step 3: Cross multiply
    89,803.64x = 134,719.31 × 30,625.47
  4. Step 4: Simplify right side
    89,803.64x = 4,125,842,263.39
  5. Step 5: Solve for x
    x = 4,125,842,263.39/89,803.64
  6. Step 6: Final answer
    x = 45,942.93

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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.