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Finding the Fourth Proportional to 86,686.89, 119,630.16 and 50,878.41

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Solution

The fourth proportional to 86,686.89, 119,630.16 and 50,878.41 is: 70,213.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,686.89 : 119,630.16 = 50,878.41 : x
  2. Step 2: Convert to fraction form
    86,686.89/119,630.16 = 50,878.41/x
  3. Step 3: Cross multiply
    86,686.89x = 119,630.16 × 50,878.41
  4. Step 4: Simplify right side
    86,686.89x = 6,086,592,328.85
  5. Step 5: Solve for x
    x = 6,086,592,328.85/86,686.89
  6. Step 6: Final answer
    x = 70,213.53

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1.5x scale

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.