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Finding the Fourth Proportional to 66,607.99, 91,916.18 and 36,392.83

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Solution

The fourth proportional to 66,607.99, 91,916.18 and 36,392.83 is: 50,220.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,607.99 : 91,916.18 = 36,392.83 : x
  2. Step 2: Convert to fraction form
    66,607.99/91,916.18 = 36,392.83/x
  3. Step 3: Cross multiply
    66,607.99x = 91,916.18 × 36,392.83
  4. Step 4: Simplify right side
    66,607.99x = 3,345,089,731.03
  5. Step 5: Solve for x
    x = 3,345,089,731.03/66,607.99
  6. Step 6: Final answer
    x = 50,220.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.