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Finding the Fourth Proportional to 23,990.40, 35,987.20 and 19,598.40

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Solution

The fourth proportional to 23,990.40, 35,987.20 and 19,598.40 is: 29,398.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,990.40 : 35,987.20 = 19,598.40 : x
  2. Step 2: Convert to fraction form
    23,990.40/35,987.20 = 19,598.40/x
  3. Step 3: Cross multiply
    23,990.40x = 35,987.20 × 19,598.40
  4. Step 4: Simplify right side
    23,990.40x = 705,291,540.48
  5. Step 5: Solve for x
    x = 705,291,540.48/23,990.40
  6. Step 6: Final answer
    x = 29,398.91

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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.