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Finding the Fourth Proportional to 68,641.72, 102,952.84 and 26,541.64

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Solution

The fourth proportional to 68,641.72, 102,952.84 and 26,541.64 is: 39,808.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,641.72 : 102,952.84 = 26,541.64 : x
  2. Step 2: Convert to fraction form
    68,641.72/102,952.84 = 26,541.64/x
  3. Step 3: Cross multiply
    68,641.72x = 102,952.84 × 26,541.64
  4. Step 4: Simplify right side
    68,641.72x = 2,732,537,216.26
  5. Step 5: Solve for x
    x = 2,732,537,216.26/68,641.72
  6. Step 6: Final answer
    x = 39,808.69

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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.