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Finding the Fourth Proportional to 125,411.64, 173,067.90 and 71,697.84

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Solution

The fourth proportional to 125,411.64, 173,067.90 and 71,697.84 is: 98,942.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,411.64 : 173,067.90 = 71,697.84 : x
  2. Step 2: Convert to fraction form
    125,411.64/173,067.90 = 71,697.84/x
  3. Step 3: Cross multiply
    125,411.64x = 173,067.90 × 71,697.84
  4. Step 4: Simplify right side
    125,411.64x = 12,408,594,603.34
  5. Step 5: Solve for x
    x = 12,408,594,603.34/125,411.64
  6. Step 6: Final answer
    x = 98,942.93

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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.