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Finding the Fourth Proportional to 19,815.58, 29,714.72 and 7,494.94

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Solution

The fourth proportional to 19,815.58, 29,714.72 and 7,494.94 is: 11,239.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,815.58 : 29,714.72 = 7,494.94 : x
  2. Step 2: Convert to fraction form
    19,815.58/29,714.72 = 7,494.94/x
  3. Step 3: Cross multiply
    19,815.58x = 29,714.72 × 7,494.94
  4. Step 4: Simplify right side
    19,815.58x = 222,709,987.97
  5. Step 5: Solve for x
    x = 222,709,987.97/19,815.58
  6. Step 6: Final answer
    x = 11,239.14

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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.