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Finding the Fourth Proportional to 64,696.48, 89,281.48 and 36,402.64

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Solution

The fourth proportional to 64,696.48, 89,281.48 and 36,402.64 is: 50,235.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,696.48 : 89,281.48 = 36,402.64 : x
  2. Step 2: Convert to fraction form
    64,696.48/89,281.48 = 36,402.64/x
  3. Step 3: Cross multiply
    64,696.48x = 89,281.48 × 36,402.64
  4. Step 4: Simplify right side
    64,696.48x = 3,250,081,575.11
  5. Step 5: Solve for x
    x = 3,250,081,575.11/64,696.48
  6. Step 6: Final answer
    x = 50,235.83

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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.