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Finding the Fourth Proportional to 85,782.84, 128,676.60 and 23,453.34

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Solution

The fourth proportional to 85,782.84, 128,676.60 and 23,453.34 is: 35,180.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,782.84 : 128,676.60 = 23,453.34 : x
  2. Step 2: Convert to fraction form
    85,782.84/128,676.60 = 23,453.34/x
  3. Step 3: Cross multiply
    85,782.84x = 128,676.60 × 23,453.34
  4. Step 4: Simplify right side
    85,782.84x = 3,017,896,049.84
  5. Step 5: Solve for x
    x = 3,017,896,049.84/85,782.84
  6. Step 6: Final answer
    x = 35,180.65

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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.