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Finding the Fourth Proportional to 64,748.92, 89,355.24 and 36,455.68

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Solution

The fourth proportional to 64,748.92, 89,355.24 and 36,455.68 is: 50,309.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,748.92 : 89,355.24 = 36,455.68 : x
  2. Step 2: Convert to fraction form
    64,748.92/89,355.24 = 36,455.68/x
  3. Step 3: Cross multiply
    64,748.92x = 89,355.24 × 36,455.68
  4. Step 4: Simplify right side
    64,748.92x = 3,257,506,035.76
  5. Step 5: Solve for x
    x = 3,257,506,035.76/64,748.92
  6. Step 6: Final answer
    x = 50,309.81

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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.