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Finding the Fourth Proportional to 85,750.54, 128,630.67 and 26,594.62

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Solution

The fourth proportional to 85,750.54, 128,630.67 and 26,594.62 is: 39,893.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,750.54 : 128,630.67 = 26,594.62 : x
  2. Step 2: Convert to fraction form
    85,750.54/128,630.67 = 26,594.62/x
  3. Step 3: Cross multiply
    85,750.54x = 128,630.67 × 26,594.62
  4. Step 4: Simplify right side
    85,750.54x = 3,420,883,789.00
  5. Step 5: Solve for x
    x = 3,420,883,789.00/85,750.54
  6. Step 6: Final answer
    x = 39,893.44

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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.