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Finding the Fourth Proportional to 85,893.89, 128,849.67 and 29,733.89

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Solution

The fourth proportional to 85,893.89, 128,849.67 and 29,733.89 is: 44,603.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,893.89 : 128,849.67 = 29,733.89 : x
  2. Step 2: Convert to fraction form
    85,893.89/128,849.67 = 29,733.89/x
  3. Step 3: Cross multiply
    85,893.89x = 128,849.67 × 29,733.89
  4. Step 4: Simplify right side
    85,893.89x = 3,831,201,270.07
  5. Step 5: Solve for x
    x = 3,831,201,270.07/85,893.89
  6. Step 6: Final answer
    x = 44,603.89

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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.