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Finding the Fourth Proportional to 81,558.63, 112,527.78 and 47,568.60

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Solution

The fourth proportional to 81,558.63, 112,527.78 and 47,568.60 is: 65,631.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,558.63 : 112,527.78 = 47,568.60 : x
  2. Step 2: Convert to fraction form
    81,558.63/112,527.78 = 47,568.60/x
  3. Step 3: Cross multiply
    81,558.63x = 112,527.78 × 47,568.60
  4. Step 4: Simplify right side
    81,558.63x = 5,352,788,955.71
  5. Step 5: Solve for x
    x = 5,352,788,955.71/81,558.63
  6. Step 6: Final answer
    x = 65,631.18

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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.