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Finding the Fourth Proportional to 70,756.56, 97,644.20 and 38,927.43

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Solution

The fourth proportional to 70,756.56, 97,644.20 and 38,927.43 is: 53,719.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,756.56 : 97,644.20 = 38,927.43 : x
  2. Step 2: Convert to fraction form
    70,756.56/97,644.20 = 38,927.43/x
  3. Step 3: Cross multiply
    70,756.56x = 97,644.20 × 38,927.43
  4. Step 4: Simplify right side
    70,756.56x = 3,801,037,565.77
  5. Step 5: Solve for x
    x = 3,801,037,565.77/70,756.56
  6. Step 6: Final answer
    x = 53,719.93

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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.