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Finding the Fourth Proportional to 85,792.75, 128,709.56 and 29,633.33

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Solution

The fourth proportional to 85,792.75, 128,709.56 and 29,633.33 is: 44,457.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,792.75 : 128,709.56 = 29,633.33 : x
  2. Step 2: Convert to fraction form
    85,792.75/128,709.56 = 29,633.33/x
  3. Step 3: Cross multiply
    85,792.75x = 128,709.56 × 29,633.33
  4. Step 4: Simplify right side
    85,792.75x = 3,814,092,370.81
  5. Step 5: Solve for x
    x = 3,814,092,370.81/85,792.75
  6. Step 6: Final answer
    x = 44,457.05

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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.