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Finding the Fourth Proportional to 8,705.61, 13,060.58 and 2,549.61

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Solution

The fourth proportional to 8,705.61, 13,060.58 and 2,549.61 is: 3,825.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,705.61 : 13,060.58 = 2,549.61 : x
  2. Step 2: Convert to fraction form
    8,705.61/13,060.58 = 2,549.61/x
  3. Step 3: Cross multiply
    8,705.61x = 13,060.58 × 2,549.61
  4. Step 4: Simplify right side
    8,705.61x = 33,299,372.63
  5. Step 5: Solve for x
    x = 33,299,372.63/8,705.61
  6. Step 6: Final answer
    x = 3,825.05

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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.