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Finding the Fourth Proportional to 52,987.76, 79,481.90 and 13,544.88

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Solution

The fourth proportional to 52,987.76, 79,481.90 and 13,544.88 is: 20,317.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,987.76 : 79,481.90 = 13,544.88 : x
  2. Step 2: Convert to fraction form
    52,987.76/79,481.90 = 13,544.88/x
  3. Step 3: Cross multiply
    52,987.76x = 79,481.90 × 13,544.88
  4. Step 4: Simplify right side
    52,987.76x = 1,076,572,579.84
  5. Step 5: Solve for x
    x = 1,076,572,579.84/52,987.76
  6. Step 6: Final answer
    x = 20,317.38

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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.