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Finding the Fourth Proportional to 19,649.40, 29,430.90 and 17,057.40

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Solution

The fourth proportional to 19,649.40, 29,430.90 and 17,057.40 is: 25,548.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,649.40 : 29,430.90 = 17,057.40 : x
  2. Step 2: Convert to fraction form
    19,649.40/29,430.90 = 17,057.40/x
  3. Step 3: Cross multiply
    19,649.40x = 29,430.90 × 17,057.40
  4. Step 4: Simplify right side
    19,649.40x = 502,014,633.66
  5. Step 5: Solve for x
    x = 502,014,633.66/19,649.40
  6. Step 6: Final answer
    x = 25,548.60

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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.