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Finding the Fourth Proportional to 14,687.49, 20,268.75 and 7,973.11

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Solution

The fourth proportional to 14,687.49, 20,268.75 and 7,973.11 is: 11,002.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,687.49 : 20,268.75 = 7,973.11 : x
  2. Step 2: Convert to fraction form
    14,687.49/20,268.75 = 7,973.11/x
  3. Step 3: Cross multiply
    14,687.49x = 20,268.75 × 7,973.11
  4. Step 4: Simplify right side
    14,687.49x = 161,604,933.45
  5. Step 5: Solve for x
    x = 161,604,933.45/14,687.49
  6. Step 6: Final answer
    x = 11,002.90

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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.