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Finding the Fourth Proportional to 31,200.60, 43,758.60 and 31,200.60

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Solution

The fourth proportional to 31,200.60, 43,758.60 and 31,200.60 is: 43,758.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,200.60 : 43,758.60 = 31,200.60 : x
  2. Step 2: Convert to fraction form
    31,200.60/43,758.60 = 31,200.60/x
  3. Step 3: Cross multiply
    31,200.60x = 43,758.60 × 31,200.60
  4. Step 4: Simplify right side
    31,200.60x = 1,365,294,575.16
  5. Step 5: Solve for x
    x = 1,365,294,575.16/31,200.60
  6. Step 6: Final answer
    x = 43,758.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.