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Finding the Fourth Proportional to 90,893.70, 125,400.84 and 52,632.36

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Solution

The fourth proportional to 90,893.70, 125,400.84 and 52,632.36 is: 72,613.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,893.70 : 125,400.84 = 52,632.36 : x
  2. Step 2: Convert to fraction form
    90,893.70/125,400.84 = 52,632.36/x
  3. Step 3: Cross multiply
    90,893.70x = 125,400.84 × 52,632.36
  4. Step 4: Simplify right side
    90,893.70x = 6,600,142,155.18
  5. Step 5: Solve for x
    x = 6,600,142,155.18/90,893.70
  6. Step 6: Final answer
    x = 72,613.86

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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.