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Finding the Fourth Proportional to 55,693.40, 83,401.62 and 38,975.18

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Solution

The fourth proportional to 55,693.40, 83,401.62 and 38,975.18 is: 58,365.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,693.40 : 83,401.62 = 38,975.18 : x
  2. Step 2: Convert to fraction form
    55,693.40/83,401.62 = 38,975.18/x
  3. Step 3: Cross multiply
    55,693.40x = 83,401.62 × 38,975.18
  4. Step 4: Simplify right side
    55,693.40x = 3,250,593,151.79
  5. Step 5: Solve for x
    x = 3,250,593,151.79/55,693.40
  6. Step 6: Final answer
    x = 58,365.86

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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.