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Finding the Fourth Proportional to 14,687.61, 20,268.83 and 7,973.18

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Solution

The fourth proportional to 14,687.61, 20,268.83 and 7,973.18 is: 11,002.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,687.61 : 20,268.83 = 7,973.18 : x
  2. Step 2: Convert to fraction form
    14,687.61/20,268.83 = 7,973.18/x
  3. Step 3: Cross multiply
    14,687.61x = 20,268.83 × 7,973.18
  4. Step 4: Simplify right side
    14,687.61x = 161,607,024.58
  5. Step 5: Solve for x
    x = 161,607,024.58/14,687.61
  6. Step 6: Final answer
    x = 11,002.95

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1.5x scale

Why These Related Problems?

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