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Finding the Fourth Proportional to 52,990.88, 79,486.32 and 13,548.08

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Solution

The fourth proportional to 52,990.88, 79,486.32 and 13,548.08 is: 20,322.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,990.88 : 79,486.32 = 13,548.08 : x
  2. Step 2: Convert to fraction form
    52,990.88/79,486.32 = 13,548.08/x
  3. Step 3: Cross multiply
    52,990.88x = 79,486.32 × 13,548.08
  4. Step 4: Simplify right side
    52,990.88x = 1,076,887,022.27
  5. Step 5: Solve for x
    x = 1,076,887,022.27/52,990.88
  6. Step 6: Final answer
    x = 20,322.12

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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.