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Finding the Fourth Proportional to 35,805.80, 53,716.46 and 13,619.60

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Solution

The fourth proportional to 35,805.80, 53,716.46 and 13,619.60 is: 20,432.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,805.80 : 53,716.46 = 13,619.60 : x
  2. Step 2: Convert to fraction form
    35,805.80/53,716.46 = 13,619.60/x
  3. Step 3: Cross multiply
    35,805.80x = 53,716.46 × 13,619.60
  4. Step 4: Simplify right side
    35,805.80x = 731,596,698.62
  5. Step 5: Solve for x
    x = 731,596,698.62/35,805.80
  6. Step 6: Final answer
    x = 20,432.35

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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.