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Finding the Fourth Proportional to 171,469.19, 257,225.66 and 53,147.63

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Solution

The fourth proportional to 171,469.19, 257,225.66 and 53,147.63 is: 79,728.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,469.19 : 257,225.66 = 53,147.63 : x
  2. Step 2: Convert to fraction form
    171,469.19/257,225.66 = 53,147.63/x
  3. Step 3: Cross multiply
    171,469.19x = 257,225.66 × 53,147.63
  4. Step 4: Simplify right side
    171,469.19x = 13,670,934,204.19
  5. Step 5: Solve for x
    x = 13,670,934,204.19/171,469.19
  6. Step 6: Final answer
    x = 79,728.23

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1.5x scale

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.