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Finding the Fourth Proportional to 64,493.96, 88,990.26 and 39,351.56

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Solution

The fourth proportional to 64,493.96, 88,990.26 and 39,351.56 is: 54,298.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,493.96 : 88,990.26 = 39,351.56 : x
  2. Step 2: Convert to fraction form
    64,493.96/88,990.26 = 39,351.56/x
  3. Step 3: Cross multiply
    64,493.96x = 88,990.26 × 39,351.56
  4. Step 4: Simplify right side
    64,493.96x = 3,501,905,555.81
  5. Step 5: Solve for x
    x = 3,501,905,555.81/64,493.96
  6. Step 6: Final answer
    x = 54,298.19

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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.