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Finding the Fourth Proportional to 125,907.09, 188,796.48 and 61,869.51

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Solution

The fourth proportional to 125,907.09, 188,796.48 and 61,869.51 is: 92,772.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,907.09 : 188,796.48 = 61,869.51 : x
  2. Step 2: Convert to fraction form
    125,907.09/188,796.48 = 61,869.51/x
  3. Step 3: Cross multiply
    125,907.09x = 188,796.48 × 61,869.51
  4. Step 4: Simplify right side
    125,907.09x = 11,680,745,707.32
  5. Step 5: Solve for x
    x = 11,680,745,707.32/125,907.09
  6. Step 6: Final answer
    x = 92,772.74

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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.