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Finding the Fourth Proportional to 14,643.72, 21,968.28 and 5,878.44

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Solution

The fourth proportional to 14,643.72, 21,968.28 and 5,878.44 is: 8,818.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,643.72 : 21,968.28 = 5,878.44 : x
  2. Step 2: Convert to fraction form
    14,643.72/21,968.28 = 5,878.44/x
  3. Step 3: Cross multiply
    14,643.72x = 21,968.28 × 5,878.44
  4. Step 4: Simplify right side
    14,643.72x = 129,139,215.88
  5. Step 5: Solve for x
    x = 129,139,215.88/14,643.72
  6. Step 6: Final answer
    x = 8,818.74

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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.