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Finding the Fourth Proportional to 125,347.39, 172,976.67 and 70,892.37

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Solution

The fourth proportional to 125,347.39, 172,976.67 and 70,892.37 is: 97,829.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,347.39 : 172,976.67 = 70,892.37 : x
  2. Step 2: Convert to fraction form
    125,347.39/172,976.67 = 70,892.37/x
  3. Step 3: Cross multiply
    125,347.39x = 172,976.67 × 70,892.37
  4. Step 4: Simplify right side
    125,347.39x = 12,262,726,091.01
  5. Step 5: Solve for x
    x = 12,262,726,091.01/125,347.39
  6. Step 6: Final answer
    x = 97,829.93

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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.