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Finding the Fourth Proportional to 66,483.84, 91,747.70 and 38,189.53

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Solution

The fourth proportional to 66,483.84, 91,747.70 and 38,189.53 is: 52,701.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,483.84 : 91,747.70 = 38,189.53 : x
  2. Step 2: Convert to fraction form
    66,483.84/91,747.70 = 38,189.53/x
  3. Step 3: Cross multiply
    66,483.84x = 91,747.70 × 38,189.53
  4. Step 4: Simplify right side
    66,483.84x = 3,503,801,823.34
  5. Step 5: Solve for x
    x = 3,503,801,823.34/66,483.84
  6. Step 6: Final answer
    x = 52,701.55

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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.