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Finding the Fourth Proportional to 43,253.64, 64,890.94 and 21,061.97

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Solution

The fourth proportional to 43,253.64, 64,890.94 and 21,061.97 is: 31,598.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,253.64 : 64,890.94 = 21,061.97 : x
  2. Step 2: Convert to fraction form
    43,253.64/64,890.94 = 21,061.97/x
  3. Step 3: Cross multiply
    43,253.64x = 64,890.94 × 21,061.97
  4. Step 4: Simplify right side
    43,253.64x = 1,366,730,654.44
  5. Step 5: Solve for x
    x = 1,366,730,654.44/43,253.64
  6. Step 6: Final answer
    x = 31,598.05

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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.