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Finding the Fourth Proportional to 73,005.84, 109,424.52 and 28,588.68

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Solution

The fourth proportional to 73,005.84, 109,424.52 and 28,588.68 is: 42,850.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,005.84 : 109,424.52 = 28,588.68 : x
  2. Step 2: Convert to fraction form
    73,005.84/109,424.52 = 28,588.68/x
  3. Step 3: Cross multiply
    73,005.84x = 109,424.52 × 28,588.68
  4. Step 4: Simplify right side
    73,005.84x = 3,128,302,586.43
  5. Step 5: Solve for x
    x = 3,128,302,586.43/73,005.84
  6. Step 6: Final answer
    x = 42,850.03

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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.