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Finding the Fourth Proportional to 29,385.99, 40,553.61 and 16,638.99

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Solution

The fourth proportional to 29,385.99, 40,553.61 and 16,638.99 is: 22,962.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,385.99 : 40,553.61 = 16,638.99 : x
  2. Step 2: Convert to fraction form
    29,385.99/40,553.61 = 16,638.99/x
  3. Step 3: Cross multiply
    29,385.99x = 40,553.61 × 16,638.99
  4. Step 4: Simplify right side
    29,385.99x = 674,771,111.25
  5. Step 5: Solve for x
    x = 674,771,111.25/29,385.99
  6. Step 6: Final answer
    x = 22,962.34

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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.