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Finding the Fourth Proportional to 88,792.20, 132,969.60 and 66,484.80

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Solution

The fourth proportional to 88,792.20, 132,969.60 and 66,484.80 is: 99,563.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,792.20 : 132,969.60 = 66,484.80 : x
  2. Step 2: Convert to fraction form
    88,792.20/132,969.60 = 66,484.80/x
  3. Step 3: Cross multiply
    88,792.20x = 132,969.60 × 66,484.80
  4. Step 4: Simplify right side
    88,792.20x = 8,840,457,262.08
  5. Step 5: Solve for x
    x = 8,840,457,262.08/88,792.20
  6. Step 6: Final answer
    x = 99,563.44

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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.