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Finding the Fourth Proportional to 20,543.10, 30,814.65 and 19,736.70

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Solution

The fourth proportional to 20,543.10, 30,814.65 and 19,736.70 is: 29,605.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,543.10 : 30,814.65 = 19,736.70 : x
  2. Step 2: Convert to fraction form
    20,543.10/30,814.65 = 19,736.70/x
  3. Step 3: Cross multiply
    20,543.10x = 30,814.65 × 19,736.70
  4. Step 4: Simplify right side
    20,543.10x = 608,179,502.66
  5. Step 5: Solve for x
    x = 608,179,502.66/20,543.10
  6. Step 6: Final answer
    x = 29,605.05

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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.