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Finding the Fourth Proportional to 58,797.28, 81,141.16 and 31,940.32

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Solution

The fourth proportional to 58,797.28, 81,141.16 and 31,940.32 is: 44,078.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,797.28 : 81,141.16 = 31,940.32 : x
  2. Step 2: Convert to fraction form
    58,797.28/81,141.16 = 31,940.32/x
  3. Step 3: Cross multiply
    58,797.28x = 81,141.16 × 31,940.32
  4. Step 4: Simplify right side
    58,797.28x = 2,591,674,615.57
  5. Step 5: Solve for x
    x = 2,591,674,615.57/58,797.28
  6. Step 6: Final answer
    x = 44,078.14

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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.