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Finding the Fourth Proportional to 14,860.61, 20,507.46 and 8,146.16

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Solution

The fourth proportional to 14,860.61, 20,507.46 and 8,146.16 is: 11,241.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,860.61 : 20,507.46 = 8,146.16 : x
  2. Step 2: Convert to fraction form
    14,860.61/20,507.46 = 8,146.16/x
  3. Step 3: Cross multiply
    14,860.61x = 20,507.46 × 8,146.16
  4. Step 4: Simplify right side
    14,860.61x = 167,057,050.35
  5. Step 5: Solve for x
    x = 167,057,050.35/14,860.61
  6. Step 6: Final answer
    x = 11,241.60

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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.