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Finding the Fourth Proportional to 57,897.60, 86,846.40 and 53,620.80

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Solution

The fourth proportional to 57,897.60, 86,846.40 and 53,620.80 is: 80,431.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,897.60 : 86,846.40 = 53,620.80 : x
  2. Step 2: Convert to fraction form
    57,897.60/86,846.40 = 53,620.80/x
  3. Step 3: Cross multiply
    57,897.60x = 86,846.40 × 53,620.80
  4. Step 4: Simplify right side
    57,897.60x = 4,656,773,445.12
  5. Step 5: Solve for x
    x = 4,656,773,445.12/57,897.60
  6. Step 6: Final answer
    x = 80,431.20

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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.