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Finding the Fourth Proportional to 55,793, 76,975.61 and 31,590.66

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Solution

The fourth proportional to 55,793, 76,975.61 and 31,590.66 is: 43,584.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,793 : 76,975.61 = 31,590.66 : x
  2. Step 2: Convert to fraction form
    55,793/76,975.61 = 31,590.66/x
  3. Step 3: Cross multiply
    55,793x = 76,975.61 × 31,590.66
  4. Step 4: Simplify right side
    55,793x = 2,431,710,323.80
  5. Step 5: Solve for x
    x = 2,431,710,323.80/55,793
  6. Step 6: Final answer
    x = 43,584.51

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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.