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Finding the Fourth Proportional to 61,165.80, 91,662.30 and 45,246.60

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Solution

The fourth proportional to 61,165.80, 91,662.30 and 45,246.60 is: 67,805.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,165.80 : 91,662.30 = 45,246.60 : x
  2. Step 2: Convert to fraction form
    61,165.80/91,662.30 = 45,246.60/x
  3. Step 3: Cross multiply
    61,165.80x = 91,662.30 × 45,246.60
  4. Step 4: Simplify right side
    61,165.80x = 4,147,407,423.18
  5. Step 5: Solve for x
    x = 4,147,407,423.18/61,165.80
  6. Step 6: Final answer
    x = 67,805.99

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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.