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Finding the Fourth Proportional to 85,933.78, 128,885.81 and 22,754.81

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Solution

The fourth proportional to 85,933.78, 128,885.81 and 22,754.81 is: 34,128.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,933.78 : 128,885.81 = 22,754.81 : x
  2. Step 2: Convert to fraction form
    85,933.78/128,885.81 = 22,754.81/x
  3. Step 3: Cross multiply
    85,933.78x = 128,885.81 × 22,754.81
  4. Step 4: Simplify right side
    85,933.78x = 2,932,771,601.70
  5. Step 5: Solve for x
    x = 2,932,771,601.70/85,933.78
  6. Step 6: Final answer
    x = 34,128.28

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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.