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Finding the Fourth Proportional to 125,393.21, 173,045.62 and 71,683.22

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Solution

The fourth proportional to 125,393.21, 173,045.62 and 71,683.22 is: 98,924.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,393.21 : 173,045.62 = 71,683.22 : x
  2. Step 2: Convert to fraction form
    125,393.21/173,045.62 = 71,683.22/x
  3. Step 3: Cross multiply
    125,393.21x = 173,045.62 × 71,683.22
  4. Step 4: Simplify right side
    125,393.21x = 12,404,467,501.90
  5. Step 5: Solve for x
    x = 12,404,467,501.90/125,393.21
  6. Step 6: Final answer
    x = 98,924.56

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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.