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Finding the Fourth Proportional to 92,851.71, 139,469.53 and 75,102.18

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Solution

The fourth proportional to 92,851.71, 139,469.53 and 75,102.18 is: 112,808.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,851.71 : 139,469.53 = 75,102.18 : x
  2. Step 2: Convert to fraction form
    92,851.71/139,469.53 = 75,102.18/x
  3. Step 3: Cross multiply
    92,851.71x = 139,469.53 × 75,102.18
  4. Step 4: Simplify right side
    92,851.71x = 10,474,465,746.58
  5. Step 5: Solve for x
    x = 10,474,465,746.58/92,851.71
  6. Step 6: Final answer
    x = 112,808.54

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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.