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Finding the Fourth Proportional to 87,685,399.60, 131,528,099.40 and 87,685,399.60

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Solution

The fourth proportional to 87,685,399.60, 131,528,099.40 and 87,685,399.60 is: 131,528,099.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,685,399.60 : 131,528,099.40 = 87,685,399.60 : x
  2. Step 2: Convert to fraction form
    87,685,399.60/131,528,099.40 = 87,685,399.60/x
  3. Step 3: Cross multiply
    87,685,399.60x = 131,528,099.40 × 87,685,399.60
  4. Step 4: Simplify right side
    87,685,399.60x = 11,533,093,954,517,520
  5. Step 5: Solve for x
    x = 11,533,093,954,517,520/87,685,399.60
  6. Step 6: Final answer
    x = 131,528,099.40

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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.