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Finding the Fourth Proportional to 14,003.70, 19,663.50 and 14,003.70

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Solution

The fourth proportional to 14,003.70, 19,663.50 and 14,003.70 is: 19,663.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,003.70 : 19,663.50 = 14,003.70 : x
  2. Step 2: Convert to fraction form
    14,003.70/19,663.50 = 14,003.70/x
  3. Step 3: Cross multiply
    14,003.70x = 19,663.50 × 14,003.70
  4. Step 4: Simplify right side
    14,003.70x = 275,361,754.95
  5. Step 5: Solve for x
    x = 275,361,754.95/14,003.70
  6. Step 6: Final answer
    x = 19,663.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.