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Finding the Fourth Proportional to 64,443.82, 88,931.37 and 36,148.90

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Solution

The fourth proportional to 64,443.82, 88,931.37 and 36,148.90 is: 49,884.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,443.82 : 88,931.37 = 36,148.90 : x
  2. Step 2: Convert to fraction form
    64,443.82/88,931.37 = 36,148.90/x
  3. Step 3: Cross multiply
    64,443.82x = 88,931.37 × 36,148.90
  4. Step 4: Simplify right side
    64,443.82x = 3,214,771,200.99
  5. Step 5: Solve for x
    x = 3,214,771,200.99/64,443.82
  6. Step 6: Final answer
    x = 49,884.86

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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.