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Finding the Fourth Proportional to 57,881.60, 86,851.20 and 32,940.80

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Solution

The fourth proportional to 57,881.60, 86,851.20 and 32,940.80 is: 49,427.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,881.60 : 86,851.20 = 32,940.80 : x
  2. Step 2: Convert to fraction form
    57,881.60/86,851.20 = 32,940.80/x
  3. Step 3: Cross multiply
    57,881.60x = 86,851.20 × 32,940.80
  4. Step 4: Simplify right side
    57,881.60x = 2,860,948,008.96
  5. Step 5: Solve for x
    x = 2,860,948,008.96/57,881.60
  6. Step 6: Final answer
    x = 49,427.59

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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.