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Finding the Fourth Proportional to 18,043.80, 24,899.76 and 10,085.64

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Solution

The fourth proportional to 18,043.80, 24,899.76 and 10,085.64 is: 13,917.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,043.80 : 24,899.76 = 10,085.64 : x
  2. Step 2: Convert to fraction form
    18,043.80/24,899.76 = 10,085.64/x
  3. Step 3: Cross multiply
    18,043.80x = 24,899.76 × 10,085.64
  4. Step 4: Simplify right side
    18,043.80x = 251,130,015.45
  5. Step 5: Solve for x
    x = 251,130,015.45/18,043.80
  6. Step 6: Final answer
    x = 13,917.80

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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.