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Finding the Fourth Proportional to 54,955.54, 75,838.14 and 31,086.88

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Solution

The fourth proportional to 54,955.54, 75,838.14 and 31,086.88 is: 42,899.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,955.54 : 75,838.14 = 31,086.88 : x
  2. Step 2: Convert to fraction form
    54,955.54/75,838.14 = 31,086.88/x
  3. Step 3: Cross multiply
    54,955.54x = 75,838.14 × 31,086.88
  4. Step 4: Simplify right side
    54,955.54x = 2,357,571,157.60
  5. Step 5: Solve for x
    x = 2,357,571,157.60/54,955.54
  6. Step 6: Final answer
    x = 42,899.61

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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.