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Finding the Fourth Proportional to 53,202.68, 79,815.69 and 15,765.68

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Solution

The fourth proportional to 53,202.68, 79,815.69 and 15,765.68 is: 23,651.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,202.68 : 79,815.69 = 15,765.68 : x
  2. Step 2: Convert to fraction form
    53,202.68/79,815.69 = 15,765.68/x
  3. Step 3: Cross multiply
    53,202.68x = 79,815.69 × 15,765.68
  4. Step 4: Simplify right side
    53,202.68x = 1,258,348,627.52
  5. Step 5: Solve for x
    x = 1,258,348,627.52/53,202.68
  6. Step 6: Final answer
    x = 23,651.98

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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.