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Finding the Fourth Proportional to 330,079.78, 455,520.95 and 186,836.75

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Solution

The fourth proportional to 330,079.78, 455,520.95 and 186,836.75 is: 257,840.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,079.78 : 455,520.95 = 186,836.75 : x
  2. Step 2: Convert to fraction form
    330,079.78/455,520.95 = 186,836.75/x
  3. Step 3: Cross multiply
    330,079.78x = 455,520.95 × 186,836.75
  4. Step 4: Simplify right side
    330,079.78x = 85,108,053,854.91
  5. Step 5: Solve for x
    x = 85,108,053,854.91/330,079.78
  6. Step 6: Final answer
    x = 257,840.86

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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.