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Finding the Fourth Proportional to 60,471.36, 83,491.20 and 54,078.12

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Solution

The fourth proportional to 60,471.36, 83,491.20 and 54,078.12 is: 74,664.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,471.36 : 83,491.20 = 54,078.12 : x
  2. Step 2: Convert to fraction form
    60,471.36/83,491.20 = 54,078.12/x
  3. Step 3: Cross multiply
    60,471.36x = 83,491.20 × 54,078.12
  4. Step 4: Simplify right side
    60,471.36x = 4,515,047,132.54
  5. Step 5: Solve for x
    x = 4,515,047,132.54/60,471.36
  6. Step 6: Final answer
    x = 74,664.22

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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.