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Finding the Fourth Proportional to 82,689.54, 124,033.85 and 30,099.03

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Solution

The fourth proportional to 82,689.54, 124,033.85 and 30,099.03 is: 45,148.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,689.54 : 124,033.85 = 30,099.03 : x
  2. Step 2: Convert to fraction form
    82,689.54/124,033.85 = 30,099.03/x
  3. Step 3: Cross multiply
    82,689.54x = 124,033.85 × 30,099.03
  4. Step 4: Simplify right side
    82,689.54x = 3,733,298,421.67
  5. Step 5: Solve for x
    x = 3,733,298,421.67/82,689.54
  6. Step 6: Final answer
    x = 45,148.38

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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.