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Finding the Fourth Proportional to 125,703.62, 173,460.72 and 74,012.54

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Solution

The fourth proportional to 125,703.62, 173,460.72 and 74,012.54 is: 102,131.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,703.62 : 173,460.72 = 74,012.54 : x
  2. Step 2: Convert to fraction form
    125,703.62/173,460.72 = 74,012.54/x
  3. Step 3: Cross multiply
    125,703.62x = 173,460.72 × 74,012.54
  4. Step 4: Simplify right side
    125,703.62x = 12,838,268,477.43
  5. Step 5: Solve for x
    x = 12,838,268,477.43/125,703.62
  6. Step 6: Final answer
    x = 102,131.26

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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.