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Finding the Fourth Proportional to 125,603.90, 188,390.78 and 41,343.12

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Solution

The fourth proportional to 125,603.90, 188,390.78 and 41,343.12 is: 62,009.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,603.90 : 188,390.78 = 41,343.12 : x
  2. Step 2: Convert to fraction form
    125,603.90/188,390.78 = 41,343.12/x
  3. Step 3: Cross multiply
    125,603.90x = 188,390.78 × 41,343.12
  4. Step 4: Simplify right side
    125,603.90x = 7,788,662,624.43
  5. Step 5: Solve for x
    x = 7,788,662,624.43/125,603.90
  6. Step 6: Final answer
    x = 62,009.72

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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.