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Finding the Fourth Proportional to 261,589.80, 392,086.26 and 119,117.64

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Solution

The fourth proportional to 261,589.80, 392,086.26 and 119,117.64 is: 178,540.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,589.80 : 392,086.26 = 119,117.64 : x
  2. Step 2: Convert to fraction form
    261,589.80/392,086.26 = 119,117.64/x
  3. Step 3: Cross multiply
    261,589.80x = 392,086.26 × 119,117.64
  4. Step 4: Simplify right side
    261,589.80x = 46,704,389,967.63
  5. Step 5: Solve for x
    x = 46,704,389,967.63/261,589.80
  6. Step 6: Final answer
    x = 178,540.56

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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.