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Finding the Fourth Proportional to 57,968.60, 86,952.90 and 53,108.60

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Solution

The fourth proportional to 57,968.60, 86,952.90 and 53,108.60 is: 79,662.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,968.60 : 86,952.90 = 53,108.60 : x
  2. Step 2: Convert to fraction form
    57,968.60/86,952.90 = 53,108.60/x
  3. Step 3: Cross multiply
    57,968.60x = 86,952.90 × 53,108.60
  4. Step 4: Simplify right side
    57,968.60x = 4,617,946,784.94
  5. Step 5: Solve for x
    x = 4,617,946,784.94/57,968.60
  6. Step 6: Final answer
    x = 79,662.90

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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.