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Finding the Fourth Proportional to 125,730.53, 173,579.87 and 83,346.47

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Solution

The fourth proportional to 125,730.53, 173,579.87 and 83,346.47 is: 115,065.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,730.53 : 173,579.87 = 83,346.47 : x
  2. Step 2: Convert to fraction form
    125,730.53/173,579.87 = 83,346.47/x
  3. Step 3: Cross multiply
    125,730.53x = 173,579.87 × 83,346.47
  4. Step 4: Simplify right side
    125,730.53x = 14,467,269,010.83
  5. Step 5: Solve for x
    x = 14,467,269,010.83/125,730.53
  6. Step 6: Final answer
    x = 115,065.68

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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.