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Finding the Fourth Proportional to 125,354.34, 172,992.60 and 68,769.36

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Solution

The fourth proportional to 125,354.34, 172,992.60 and 68,769.36 is: 94,903.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,354.34 : 172,992.60 = 68,769.36 : x
  2. Step 2: Convert to fraction form
    125,354.34/172,992.60 = 68,769.36/x
  3. Step 3: Cross multiply
    125,354.34x = 172,992.60 × 68,769.36
  4. Step 4: Simplify right side
    125,354.34x = 11,896,590,386.74
  5. Step 5: Solve for x
    x = 11,896,590,386.74/125,354.34
  6. Step 6: Final answer
    x = 94,903.70

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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.