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Finding the Fourth Proportional to 66,406.32, 91,640.70 and 36,598.32

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Solution

The fourth proportional to 66,406.32, 91,640.70 and 36,598.32 is: 50,505.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,406.32 : 91,640.70 = 36,598.32 : x
  2. Step 2: Convert to fraction form
    66,406.32/91,640.70 = 36,598.32/x
  3. Step 3: Cross multiply
    66,406.32x = 91,640.70 × 36,598.32
  4. Step 4: Simplify right side
    66,406.32x = 3,353,895,663.62
  5. Step 5: Solve for x
    x = 3,353,895,663.62/66,406.32
  6. Step 6: Final answer
    x = 50,505.67

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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.