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Finding the Fourth Proportional to 82,889.51, 124,358.51 and 26,728.47

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Solution

The fourth proportional to 82,889.51, 124,358.51 and 26,728.47 is: 40,100.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,889.51 : 124,358.51 = 26,728.47 : x
  2. Step 2: Convert to fraction form
    82,889.51/124,358.51 = 26,728.47/x
  3. Step 3: Cross multiply
    82,889.51x = 124,358.51 × 26,728.47
  4. Step 4: Simplify right side
    82,889.51x = 3,323,913,236.95
  5. Step 5: Solve for x
    x = 3,323,913,236.95/82,889.51
  6. Step 6: Final answer
    x = 40,100.53

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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.