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Finding the Fourth Proportional to 89,318.61, 133,980.75 and 44,921.12

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Solution

The fourth proportional to 89,318.61, 133,980.75 and 44,921.12 is: 67,383.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,318.61 : 133,980.75 = 44,921.12 : x
  2. Step 2: Convert to fraction form
    89,318.61/133,980.75 = 44,921.12/x
  3. Step 3: Cross multiply
    89,318.61x = 133,980.75 × 44,921.12
  4. Step 4: Simplify right side
    89,318.61x = 6,018,564,678.54
  5. Step 5: Solve for x
    x = 6,018,564,678.54/89,318.61
  6. Step 6: Final answer
    x = 67,383.10

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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.