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Finding the Fourth Proportional to 60,698.92, 91,057.76 and 20,708.54

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Solution

The fourth proportional to 60,698.92, 91,057.76 and 20,708.54 is: 31,066.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,698.92 : 91,057.76 = 20,708.54 : x
  2. Step 2: Convert to fraction form
    60,698.92/91,057.76 = 20,708.54/x
  3. Step 3: Cross multiply
    60,698.92x = 91,057.76 × 20,708.54
  4. Step 4: Simplify right side
    60,698.92x = 1,885,672,954.83
  5. Step 5: Solve for x
    x = 1,885,672,954.83/60,698.92
  6. Step 6: Final answer
    x = 31,066.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.