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Finding the Fourth Proportional to 88,143.90, 132,021.45 and 53,022.30

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Solution

The fourth proportional to 88,143.90, 132,021.45 and 53,022.30 is: 79,416.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,143.90 : 132,021.45 = 53,022.30 : x
  2. Step 2: Convert to fraction form
    88,143.90/132,021.45 = 53,022.30/x
  3. Step 3: Cross multiply
    88,143.90x = 132,021.45 × 53,022.30
  4. Step 4: Simplify right side
    88,143.90x = 7,000,080,928.34
  5. Step 5: Solve for x
    x = 7,000,080,928.34/88,143.90
  6. Step 6: Final answer
    x = 79,416.51

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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.