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Finding the Fourth Proportional to 58,724.80, 81,040.80 and 31,867.53

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Solution

The fourth proportional to 58,724.80, 81,040.80 and 31,867.53 is: 43,977.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,724.80 : 81,040.80 = 31,867.53 : x
  2. Step 2: Convert to fraction form
    58,724.80/81,040.80 = 31,867.53/x
  3. Step 3: Cross multiply
    58,724.80x = 81,040.80 × 31,867.53
  4. Step 4: Simplify right side
    58,724.80x = 2,582,569,940.82
  5. Step 5: Solve for x
    x = 2,582,569,940.82/58,724.80
  6. Step 6: Final answer
    x = 43,977.50

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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.