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Finding the Fourth Proportional to 21,070.84, 29,081.10 and 16,026.94

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Solution

The fourth proportional to 21,070.84, 29,081.10 and 16,026.94 is: 22,119.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,070.84 : 29,081.10 = 16,026.94 : x
  2. Step 2: Convert to fraction form
    21,070.84/29,081.10 = 16,026.94/x
  3. Step 3: Cross multiply
    21,070.84x = 29,081.10 × 16,026.94
  4. Step 4: Simplify right side
    21,070.84x = 466,081,044.83
  5. Step 5: Solve for x
    x = 466,081,044.83/21,070.84
  6. Step 6: Final answer
    x = 22,119.72

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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.