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Finding the Fourth Proportional to 14,663.80, 21,995.70 and 12,071.80

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Solution

The fourth proportional to 14,663.80, 21,995.70 and 12,071.80 is: 18,107.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,663.80 : 21,995.70 = 12,071.80 : x
  2. Step 2: Convert to fraction form
    14,663.80/21,995.70 = 12,071.80/x
  3. Step 3: Cross multiply
    14,663.80x = 21,995.70 × 12,071.80
  4. Step 4: Simplify right side
    14,663.80x = 265,527,691.26
  5. Step 5: Solve for x
    x = 265,527,691.26/14,663.80
  6. Step 6: Final answer
    x = 18,107.70

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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.