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Finding the Fourth Proportional to 85,666.82, 128,513.99 and 29,493.11

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Solution

The fourth proportional to 85,666.82, 128,513.99 and 29,493.11 is: 44,244.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,666.82 : 128,513.99 = 29,493.11 : x
  2. Step 2: Convert to fraction form
    85,666.82/128,513.99 = 29,493.11/x
  3. Step 3: Cross multiply
    85,666.82x = 128,513.99 × 29,493.11
  4. Step 4: Simplify right side
    85,666.82x = 3,790,277,638.63
  5. Step 5: Solve for x
    x = 3,790,277,638.63/85,666.82
  6. Step 6: Final answer
    x = 44,244.41

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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.