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Finding the Fourth Proportional to 115,216.40, 172,824.62 and 36,336.80

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Solution

The fourth proportional to 115,216.40, 172,824.62 and 36,336.80 is: 54,505.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,216.40 : 172,824.62 = 36,336.80 : x
  2. Step 2: Convert to fraction form
    115,216.40/172,824.62 = 36,336.80/x
  3. Step 3: Cross multiply
    115,216.40x = 172,824.62 × 36,336.80
  4. Step 4: Simplify right side
    115,216.40x = 6,279,893,652.02
  5. Step 5: Solve for x
    x = 6,279,893,652.02/115,216.40
  6. Step 6: Final answer
    x = 54,505.21

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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.