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Finding the Fourth Proportional to 30,453.60, 45,615.60 and 25,269.60

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Solution

The fourth proportional to 30,453.60, 45,615.60 and 25,269.60 is: 37,850.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,453.60 : 45,615.60 = 25,269.60 : x
  2. Step 2: Convert to fraction form
    30,453.60/45,615.60 = 25,269.60/x
  3. Step 3: Cross multiply
    30,453.60x = 45,615.60 × 25,269.60
  4. Step 4: Simplify right side
    30,453.60x = 1,152,687,965.76
  5. Step 5: Solve for x
    x = 1,152,687,965.76/30,453.60
  6. Step 6: Final answer
    x = 37,850.63

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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.