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Finding the Fourth Proportional to 19,921.68, 29,887.20 and 6,070.68

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Solution

The fourth proportional to 19,921.68, 29,887.20 and 6,070.68 is: 9,107.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,921.68 : 29,887.20 = 6,070.68 : x
  2. Step 2: Convert to fraction form
    19,921.68/29,887.20 = 6,070.68/x
  3. Step 3: Cross multiply
    19,921.68x = 29,887.20 × 6,070.68
  4. Step 4: Simplify right side
    19,921.68x = 181,435,627.30
  5. Step 5: Solve for x
    x = 181,435,627.30/19,921.68
  6. Step 6: Final answer
    x = 9,107.45

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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.