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Finding the Fourth Proportional to 78,593.81, 108,427.41 and 48,370.01

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Solution

The fourth proportional to 78,593.81, 108,427.41 and 48,370.01 is: 66,730.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,593.81 : 108,427.41 = 48,370.01 : x
  2. Step 2: Convert to fraction form
    78,593.81/108,427.41 = 48,370.01/x
  3. Step 3: Cross multiply
    78,593.81x = 108,427.41 × 48,370.01
  4. Step 4: Simplify right side
    78,593.81x = 5,244,634,905.97
  5. Step 5: Solve for x
    x = 5,244,634,905.97/78,593.81
  6. Step 6: Final answer
    x = 66,730.89

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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.