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Finding the Fourth Proportional to 72,599.50, 108,797.10 and 57,742.48

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Solution

The fourth proportional to 72,599.50, 108,797.10 and 57,742.48 is: 86,532.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,599.50 : 108,797.10 = 57,742.48 : x
  2. Step 2: Convert to fraction form
    72,599.50/108,797.10 = 57,742.48/x
  3. Step 3: Cross multiply
    72,599.50x = 108,797.10 × 57,742.48
  4. Step 4: Simplify right side
    72,599.50x = 6,282,214,370.81
  5. Step 5: Solve for x
    x = 6,282,214,370.81/72,599.50
  6. Step 6: Final answer
    x = 86,532.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.