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Finding the Fourth Proportional to 66,099.66, 91,219.95 and 37,805.28

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Solution

The fourth proportional to 66,099.66, 91,219.95 and 37,805.28 is: 52,172.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,099.66 : 91,219.95 = 37,805.28 : x
  2. Step 2: Convert to fraction form
    66,099.66/91,219.95 = 37,805.28/x
  3. Step 3: Cross multiply
    66,099.66x = 91,219.95 × 37,805.28
  4. Step 4: Simplify right side
    66,099.66x = 3,448,595,751.34
  5. Step 5: Solve for x
    x = 3,448,595,751.34/66,099.66
  6. Step 6: Final answer
    x = 52,172.67

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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.