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Finding the Fourth Proportional to 125,762.56, 173,576.98 and 72,083.56

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Solution

The fourth proportional to 125,762.56, 173,576.98 and 72,083.56 is: 99,489.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,762.56 : 173,576.98 = 72,083.56 : x
  2. Step 2: Convert to fraction form
    125,762.56/173,576.98 = 72,083.56/x
  3. Step 3: Cross multiply
    125,762.56x = 173,576.98 × 72,083.56
  4. Step 4: Simplify right side
    125,762.56x = 12,512,046,652.45
  5. Step 5: Solve for x
    x = 12,512,046,652.45/125,762.56
  6. Step 6: Final answer
    x = 99,489.44

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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.