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Finding the Fourth Proportional to 86,886.49, 119,893.48 and 48,640.72

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Solution

The fourth proportional to 86,886.49, 119,893.48 and 48,640.72 is: 67,118.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,886.49 : 119,893.48 = 48,640.72 : x
  2. Step 2: Convert to fraction form
    86,886.49/119,893.48 = 48,640.72/x
  3. Step 3: Cross multiply
    86,886.49x = 119,893.48 × 48,640.72
  4. Step 4: Simplify right side
    86,886.49x = 5,831,705,190.51
  5. Step 5: Solve for x
    x = 5,831,705,190.51/86,886.49
  6. Step 6: Final answer
    x = 67,118.66

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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.