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Finding the Fourth Proportional to 32,761.50, 45,211 and 18,615.12

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Solution

The fourth proportional to 32,761.50, 45,211 and 18,615.12 is: 25,688.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,761.50 : 45,211 = 18,615.12 : x
  2. Step 2: Convert to fraction form
    32,761.50/45,211 = 18,615.12/x
  3. Step 3: Cross multiply
    32,761.50x = 45,211 × 18,615.12
  4. Step 4: Simplify right side
    32,761.50x = 841,608,190.32
  5. Step 5: Solve for x
    x = 841,608,190.32/32,761.50
  6. Step 6: Final answer
    x = 25,688.94

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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.