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Finding the Fourth Proportional to 171,615.80, 257,472.30 and 53,299.10

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Solution

The fourth proportional to 171,615.80, 257,472.30 and 53,299.10 is: 79,963.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,615.80 : 257,472.30 = 53,299.10 : x
  2. Step 2: Convert to fraction form
    171,615.80/257,472.30 = 53,299.10/x
  3. Step 3: Cross multiply
    171,615.80x = 257,472.30 × 53,299.10
  4. Step 4: Simplify right side
    171,615.80x = 13,723,041,864.93
  5. Step 5: Solve for x
    x = 13,723,041,864.93/171,615.80
  6. Step 6: Final answer
    x = 79,963.74

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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.