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Finding the Fourth Proportional to 76,335.76, 114,322.64 and 60,489.84

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Solution

The fourth proportional to 76,335.76, 114,322.64 and 60,489.84 is: 90,591.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,335.76 : 114,322.64 = 60,489.84 : x
  2. Step 2: Convert to fraction form
    76,335.76/114,322.64 = 60,489.84/x
  3. Step 3: Cross multiply
    76,335.76x = 114,322.64 × 60,489.84
  4. Step 4: Simplify right side
    76,335.76x = 6,915,358,328.24
  5. Step 5: Solve for x
    x = 6,915,358,328.24/76,335.76
  6. Step 6: Final answer
    x = 90,591.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.