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Finding the Fourth Proportional to 330,081.90, 455,523.88 and 186,838.88

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Solution

The fourth proportional to 330,081.90, 455,523.88 and 186,838.88 is: 257,843.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,081.90 : 455,523.88 = 186,838.88 : x
  2. Step 2: Convert to fraction form
    330,081.90/455,523.88 = 186,838.88/x
  3. Step 3: Cross multiply
    330,081.90x = 455,523.88 × 186,838.88
  4. Step 4: Simplify right side
    330,081.90x = 85,109,571,552.45
  5. Step 5: Solve for x
    x = 85,109,571,552.45/330,081.90
  6. Step 6: Final answer
    x = 257,843.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.