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Finding the Fourth Proportional to 21,068.84, 29,078.34 and 16,024.94

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Solution

The fourth proportional to 21,068.84, 29,078.34 and 16,024.94 is: 22,116.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,068.84 : 29,078.34 = 16,024.94 : x
  2. Step 2: Convert to fraction form
    21,068.84/29,078.34 = 16,024.94/x
  3. Step 3: Cross multiply
    21,068.84x = 29,078.34 × 16,024.94
  4. Step 4: Simplify right side
    21,068.84x = 465,978,653.80
  5. Step 5: Solve for x
    x = 465,978,653.80/21,068.84
  6. Step 6: Final answer
    x = 22,116.96

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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.