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Finding the Fourth Proportional to 125,071.34, 172,600.36 and 68,487.98

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Solution

The fourth proportional to 125,071.34, 172,600.36 and 68,487.98 is: 94,514.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,071.34 : 172,600.36 = 68,487.98 : x
  2. Step 2: Convert to fraction form
    125,071.34/172,600.36 = 68,487.98/x
  3. Step 3: Cross multiply
    125,071.34x = 172,600.36 × 68,487.98
  4. Step 4: Simplify right side
    125,071.34x = 11,821,050,003.67
  5. Step 5: Solve for x
    x = 11,821,050,003.67/125,071.34
  6. Step 6: Final answer
    x = 94,514.46

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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.