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Finding the Fourth Proportional to 15,048.55, 20,773.77 and 9,678.79

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Solution

The fourth proportional to 15,048.55, 20,773.77 and 9,678.79 is: 13,361.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,048.55 : 20,773.77 = 9,678.79 : x
  2. Step 2: Convert to fraction form
    15,048.55/20,773.77 = 9,678.79/x
  3. Step 3: Cross multiply
    15,048.55x = 20,773.77 × 9,678.79
  4. Step 4: Simplify right side
    15,048.55x = 201,064,853.47
  5. Step 5: Solve for x
    x = 201,064,853.47/15,048.55
  6. Step 6: Final answer
    x = 13,361.08

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.