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Finding the Fourth Proportional to 125,402.58, 173,060.55 and 68,815.98

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Solution

The fourth proportional to 125,402.58, 173,060.55 and 68,815.98 is: 94,968.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,402.58 : 173,060.55 = 68,815.98 : x
  2. Step 2: Convert to fraction form
    125,402.58/173,060.55 = 68,815.98/x
  3. Step 3: Cross multiply
    125,402.58x = 173,060.55 × 68,815.98
  4. Step 4: Simplify right side
    125,402.58x = 11,909,331,347.59
  5. Step 5: Solve for x
    x = 11,909,331,347.59/125,402.58
  6. Step 6: Final answer
    x = 94,968.79

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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.