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Finding the Fourth Proportional to 90,633.60, 125,070.89 and 50,349.89

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Solution

The fourth proportional to 90,633.60, 125,070.89 and 50,349.89 is: 69,480.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,633.60 : 125,070.89 = 50,349.89 : x
  2. Step 2: Convert to fraction form
    90,633.60/125,070.89 = 50,349.89/x
  3. Step 3: Cross multiply
    90,633.60x = 125,070.89 × 50,349.89
  4. Step 4: Simplify right side
    90,633.60x = 6,297,305,614.63
  5. Step 5: Solve for x
    x = 6,297,305,614.63/90,633.60
  6. Step 6: Final answer
    x = 69,480.92

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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.