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Finding the Fourth Proportional to 125,603.90, 188,390.79 and 41,343.11

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Solution

The fourth proportional to 125,603.90, 188,390.79 and 41,343.11 is: 62,009.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,603.90 : 188,390.79 = 41,343.11 : x
  2. Step 2: Convert to fraction form
    125,603.90/188,390.79 = 41,343.11/x
  3. Step 3: Cross multiply
    125,603.90x = 188,390.79 × 41,343.11
  4. Step 4: Simplify right side
    125,603.90x = 7,788,661,153.96
  5. Step 5: Solve for x
    x = 7,788,661,153.96/125,603.90
  6. Step 6: Final answer
    x = 62,009.71

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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.