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Finding the Fourth Proportional to 64,258.96, 88,728.36 and 42,769.36

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Solution

The fourth proportional to 64,258.96, 88,728.36 and 42,769.36 is: 59,055.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,258.96 : 88,728.36 = 42,769.36 : x
  2. Step 2: Convert to fraction form
    64,258.96/88,728.36 = 42,769.36/x
  3. Step 3: Cross multiply
    64,258.96x = 88,728.36 × 42,769.36
  4. Step 4: Simplify right side
    64,258.96x = 3,794,855,171.05
  5. Step 5: Solve for x
    x = 3,794,855,171.05/64,258.96
  6. Step 6: Final answer
    x = 59,055.66

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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.