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Finding the Fourth Proportional to 125,042.74, 172,558.98 and 68,454.11

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Solution

The fourth proportional to 125,042.74, 172,558.98 and 68,454.11 is: 94,466.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,042.74 : 172,558.98 = 68,454.11 : x
  2. Step 2: Convert to fraction form
    125,042.74/172,558.98 = 68,454.11/x
  3. Step 3: Cross multiply
    125,042.74x = 172,558.98 × 68,454.11
  4. Step 4: Simplify right side
    125,042.74x = 11,812,371,398.41
  5. Step 5: Solve for x
    x = 11,812,371,398.41/125,042.74
  6. Step 6: Final answer
    x = 94,466.67

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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.