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Finding the Fourth Proportional to 35,986.22, 53,979.25 and 9,690.99

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Solution

The fourth proportional to 35,986.22, 53,979.25 and 9,690.99 is: 14,536.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,986.22 : 53,979.25 = 9,690.99 : x
  2. Step 2: Convert to fraction form
    35,986.22/53,979.25 = 9,690.99/x
  3. Step 3: Cross multiply
    35,986.22x = 53,979.25 × 9,690.99
  4. Step 4: Simplify right side
    35,986.22x = 523,112,053.61
  5. Step 5: Solve for x
    x = 523,112,053.61/35,986.22
  6. Step 6: Final answer
    x = 14,536.45

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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.