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Finding the Fourth Proportional to 19,714.20, 29,571.30 and 18,101.40

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Solution

The fourth proportional to 19,714.20, 29,571.30 and 18,101.40 is: 27,152.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,714.20 : 29,571.30 = 18,101.40 : x
  2. Step 2: Convert to fraction form
    19,714.20/29,571.30 = 18,101.40/x
  3. Step 3: Cross multiply
    19,714.20x = 29,571.30 × 18,101.40
  4. Step 4: Simplify right side
    19,714.20x = 535,281,929.82
  5. Step 5: Solve for x
    x = 535,281,929.82/19,714.20
  6. Step 6: Final answer
    x = 27,152.10

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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.