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Finding the Fourth Proportional to 74,363.96, 102,621.97 and 42,532.81

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Solution

The fourth proportional to 74,363.96, 102,621.97 and 42,532.81 is: 58,695.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,363.96 : 102,621.97 = 42,532.81 : x
  2. Step 2: Convert to fraction form
    74,363.96/102,621.97 = 42,532.81/x
  3. Step 3: Cross multiply
    74,363.96x = 102,621.97 × 42,532.81
  4. Step 4: Simplify right side
    74,363.96x = 4,364,800,751.84
  5. Step 5: Solve for x
    x = 4,364,800,751.84/74,363.96
  6. Step 6: Final answer
    x = 58,695.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.