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Finding the Fourth Proportional to 147,139.82, 203,038.90 and 82,594.26

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Solution

The fourth proportional to 147,139.82, 203,038.90 and 82,594.26 is: 113,972.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,139.82 : 203,038.90 = 82,594.26 : x
  2. Step 2: Convert to fraction form
    147,139.82/203,038.90 = 82,594.26/x
  3. Step 3: Cross multiply
    147,139.82x = 203,038.90 × 82,594.26
  4. Step 4: Simplify right side
    147,139.82x = 16,769,847,696.71
  5. Step 5: Solve for x
    x = 16,769,847,696.71/147,139.82
  6. Step 6: Final answer
    x = 113,972.19

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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.