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Finding the Fourth Proportional to 86,010.96, 128,950.20 and 26,811.60

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Solution

The fourth proportional to 86,010.96, 128,950.20 and 26,811.60 is: 40,196.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,010.96 : 128,950.20 = 26,811.60 : x
  2. Step 2: Convert to fraction form
    86,010.96/128,950.20 = 26,811.60/x
  3. Step 3: Cross multiply
    86,010.96x = 128,950.20 × 26,811.60
  4. Step 4: Simplify right side
    86,010.96x = 3,457,361,182.32
  5. Step 5: Solve for x
    x = 3,457,361,182.32/86,010.96
  6. Step 6: Final answer
    x = 40,196.75

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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.