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Finding the Fourth Proportional to 65,187.60, 97,788.60 and 20,806.80

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Solution

The fourth proportional to 65,187.60, 97,788.60 and 20,806.80 is: 31,212.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,187.60 : 97,788.60 = 20,806.80 : x
  2. Step 2: Convert to fraction form
    65,187.60/97,788.60 = 20,806.80/x
  3. Step 3: Cross multiply
    65,187.60x = 97,788.60 × 20,806.80
  4. Step 4: Simplify right side
    65,187.60x = 2,034,667,842.48
  5. Step 5: Solve for x
    x = 2,034,667,842.48/65,187.60
  6. Step 6: Final answer
    x = 31,212.50

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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.