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Finding the Fourth Proportional to 86,649.54, 119,575.35 and 48,406.61

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Solution

The fourth proportional to 86,649.54, 119,575.35 and 48,406.61 is: 66,800.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,649.54 : 119,575.35 = 48,406.61 : x
  2. Step 2: Convert to fraction form
    86,649.54/119,575.35 = 48,406.61/x
  3. Step 3: Cross multiply
    86,649.54x = 119,575.35 × 48,406.61
  4. Step 4: Simplify right side
    86,649.54x = 5,788,236,735.19
  5. Step 5: Solve for x
    x = 5,788,236,735.19/86,649.54
  6. Step 6: Final answer
    x = 66,800.55

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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.