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Finding the Fourth Proportional to 18,703.82, 28,047.48 and 7,008.84

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Solution

The fourth proportional to 18,703.82, 28,047.48 and 7,008.84 is: 10,510.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,703.82 : 28,047.48 = 7,008.84 : x
  2. Step 2: Convert to fraction form
    18,703.82/28,047.48 = 7,008.84/x
  3. Step 3: Cross multiply
    18,703.82x = 28,047.48 × 7,008.84
  4. Step 4: Simplify right side
    18,703.82x = 196,580,299.72
  5. Step 5: Solve for x
    x = 196,580,299.72/18,703.82
  6. Step 6: Final answer
    x = 10,510.17

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1.5x scale

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.