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Finding the Fourth Proportional to 40,693.80, 61,040.70 and 26,742.60

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Solution

The fourth proportional to 40,693.80, 61,040.70 and 26,742.60 is: 40,113.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,693.80 : 61,040.70 = 26,742.60 : x
  2. Step 2: Convert to fraction form
    40,693.80/61,040.70 = 26,742.60/x
  3. Step 3: Cross multiply
    40,693.80x = 61,040.70 × 26,742.60
  4. Step 4: Simplify right side
    40,693.80x = 1,632,387,023.82
  5. Step 5: Solve for x
    x = 1,632,387,023.82/40,693.80
  6. Step 6: Final answer
    x = 40,113.90

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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.