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Finding the Fourth Proportional to 15,322.99, 21,148.19 and 14,322.44

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Solution

The fourth proportional to 15,322.99, 21,148.19 and 14,322.44 is: 19,767.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,322.99 : 21,148.19 = 14,322.44 : x
  2. Step 2: Convert to fraction form
    15,322.99/21,148.19 = 14,322.44/x
  3. Step 3: Cross multiply
    15,322.99x = 21,148.19 × 14,322.44
  4. Step 4: Simplify right side
    15,322.99x = 302,893,682.38
  5. Step 5: Solve for x
    x = 302,893,682.38/15,322.99
  6. Step 6: Final answer
    x = 19,767.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.