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Finding the Fourth Proportional to 171,646.80, 257,470.20 and 53,317.20

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Solution

The fourth proportional to 171,646.80, 257,470.20 and 53,317.20 is: 79,975.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,646.80 : 257,470.20 = 53,317.20 : x
  2. Step 2: Convert to fraction form
    171,646.80/257,470.20 = 53,317.20/x
  3. Step 3: Cross multiply
    171,646.80x = 257,470.20 × 53,317.20
  4. Step 4: Simplify right side
    171,646.80x = 13,727,590,147.44
  5. Step 5: Solve for x
    x = 13,727,590,147.44/171,646.80
  6. Step 6: Final answer
    x = 79,975.80

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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.