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Finding the Fourth Proportional to 21,648.76, 29,892.18 and 16,946.44

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Solution

The fourth proportional to 21,648.76, 29,892.18 and 16,946.44 is: 23,399.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,648.76 : 29,892.18 = 16,946.44 : x
  2. Step 2: Convert to fraction form
    21,648.76/29,892.18 = 16,946.44/x
  3. Step 3: Cross multiply
    21,648.76x = 29,892.18 × 16,946.44
  4. Step 4: Simplify right side
    21,648.76x = 506,566,034.84
  5. Step 5: Solve for x
    x = 506,566,034.84/21,648.76
  6. Step 6: Final answer
    x = 23,399.31

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Half scale
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Double scale
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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.