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Finding the Fourth Proportional to 125,689.94, 188,494.84 and 41,434.40

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Solution

The fourth proportional to 125,689.94, 188,494.84 and 41,434.40 is: 62,138.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,689.94 : 188,494.84 = 41,434.40 : x
  2. Step 2: Convert to fraction form
    125,689.94/188,494.84 = 41,434.40/x
  3. Step 3: Cross multiply
    125,689.94x = 188,494.84 × 41,434.40
  4. Step 4: Simplify right side
    125,689.94x = 7,810,170,598.50
  5. Step 5: Solve for x
    x = 7,810,170,598.50/125,689.94
  6. Step 6: Final answer
    x = 62,138.39

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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.