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Finding the Fourth Proportional to 35,979.21, 53,963.94 and 9,685.53

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Solution

The fourth proportional to 35,979.21, 53,963.94 and 9,685.53 is: 14,526.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,979.21 : 53,963.94 = 9,685.53 : x
  2. Step 2: Convert to fraction form
    35,979.21/53,963.94 = 9,685.53/x
  3. Step 3: Cross multiply
    35,979.21x = 53,963.94 × 9,685.53
  4. Step 4: Simplify right side
    35,979.21x = 522,669,359.79
  5. Step 5: Solve for x
    x = 522,669,359.79/35,979.21
  6. Step 6: Final answer
    x = 14,526.98

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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.