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Finding the Fourth Proportional to 66,366.20, 91,586.90 and 36,153.20

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Solution

The fourth proportional to 66,366.20, 91,586.90 and 36,153.20 is: 49,892.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,366.20 : 91,586.90 = 36,153.20 : x
  2. Step 2: Convert to fraction form
    66,366.20/91,586.90 = 36,153.20/x
  3. Step 3: Cross multiply
    66,366.20x = 91,586.90 × 36,153.20
  4. Step 4: Simplify right side
    66,366.20x = 3,311,159,513.08
  5. Step 5: Solve for x
    x = 3,311,159,513.08/66,366.20
  6. Step 6: Final answer
    x = 49,892.26

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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.