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Finding the Fourth Proportional to 64,287.96, 88,712.28 and 35,989.80

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Solution

The fourth proportional to 64,287.96, 88,712.28 and 35,989.80 is: 49,663.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,287.96 : 88,712.28 = 35,989.80 : x
  2. Step 2: Convert to fraction form
    64,287.96/88,712.28 = 35,989.80/x
  3. Step 3: Cross multiply
    64,287.96x = 88,712.28 × 35,989.80
  4. Step 4: Simplify right side
    64,287.96x = 3,192,737,214.74
  5. Step 5: Solve for x
    x = 3,192,737,214.74/64,287.96
  6. Step 6: Final answer
    x = 49,663.07

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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.