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Finding the Fourth Proportional to 19,798.65, 29,691.63 and 10,433.43

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Solution

The fourth proportional to 19,798.65, 29,691.63 and 10,433.43 is: 15,646.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,798.65 : 29,691.63 = 10,433.43 : x
  2. Step 2: Convert to fraction form
    19,798.65/29,691.63 = 10,433.43/x
  3. Step 3: Cross multiply
    19,798.65x = 29,691.63 × 10,433.43
  4. Step 4: Simplify right side
    19,798.65x = 309,785,543.19
  5. Step 5: Solve for x
    x = 309,785,543.19/19,798.65
  6. Step 6: Final answer
    x = 15,646.80

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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.