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Finding the Fourth Proportional to 75,324.60, 112,986.90 and 37,999.80

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Solution

The fourth proportional to 75,324.60, 112,986.90 and 37,999.80 is: 56,999.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,324.60 : 112,986.90 = 37,999.80 : x
  2. Step 2: Convert to fraction form
    75,324.60/112,986.90 = 37,999.80/x
  3. Step 3: Cross multiply
    75,324.60x = 112,986.90 × 37,999.80
  4. Step 4: Simplify right side
    75,324.60x = 4,293,479,602.62
  5. Step 5: Solve for x
    x = 4,293,479,602.62/75,324.60
  6. Step 6: Final answer
    x = 56,999.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.