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Finding the Fourth Proportional to 62,884.55, 94,306.78 and 20,756.81

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Solution

The fourth proportional to 62,884.55, 94,306.78 and 20,756.81 is: 31,128.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,884.55 : 94,306.78 = 20,756.81 : x
  2. Step 2: Convert to fraction form
    62,884.55/94,306.78 = 20,756.81/x
  3. Step 3: Cross multiply
    62,884.55x = 94,306.78 × 20,756.81
  4. Step 4: Simplify right side
    62,884.55x = 1,957,507,914.17
  5. Step 5: Solve for x
    x = 1,957,507,914.17/62,884.55
  6. Step 6: Final answer
    x = 31,128.60

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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.