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Finding the Fourth Proportional to 59,040, 81,475.20 and 36,684

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Solution

The fourth proportional to 59,040, 81,475.20 and 36,684 is: 50,623.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,040 : 81,475.20 = 36,684 : x
  2. Step 2: Convert to fraction form
    59,040/81,475.20 = 36,684/x
  3. Step 3: Cross multiply
    59,040x = 81,475.20 × 36,684
  4. Step 4: Simplify right side
    59,040x = 2,988,836,236.80
  5. Step 5: Solve for x
    x = 2,988,836,236.80/59,040
  6. Step 6: Final answer
    x = 50,623.92

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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.