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Finding the Fourth Proportional to 63,215.68, 87,236.40 and 34,921.12

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Solution

The fourth proportional to 63,215.68, 87,236.40 and 34,921.12 is: 48,190.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,215.68 : 87,236.40 = 34,921.12 : x
  2. Step 2: Convert to fraction form
    63,215.68/87,236.40 = 34,921.12/x
  3. Step 3: Cross multiply
    63,215.68x = 87,236.40 × 34,921.12
  4. Step 4: Simplify right side
    63,215.68x = 3,046,392,792.77
  5. Step 5: Solve for x
    x = 3,046,392,792.77/63,215.68
  6. Step 6: Final answer
    x = 48,190.46

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Double scale
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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.