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Finding the Fourth Proportional to 85,999.66, 128,949.82 and 33,347.63

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Solution

The fourth proportional to 85,999.66, 128,949.82 and 33,347.63 is: 50,002.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,999.66 : 128,949.82 = 33,347.63 : x
  2. Step 2: Convert to fraction form
    85,999.66/128,949.82 = 33,347.63/x
  3. Step 3: Cross multiply
    85,999.66x = 128,949.82 × 33,347.63
  4. Step 4: Simplify right side
    85,999.66x = 4,300,170,885.93
  5. Step 5: Solve for x
    x = 4,300,170,885.93/85,999.66
  6. Step 6: Final answer
    x = 50,002.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.