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Finding the Fourth Proportional to 85,684.88, 128,523.54 and 23,355.38

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Solution

The fourth proportional to 85,684.88, 128,523.54 and 23,355.38 is: 35,032.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,684.88 : 128,523.54 = 23,355.38 : x
  2. Step 2: Convert to fraction form
    85,684.88/128,523.54 = 23,355.38/x
  3. Step 3: Cross multiply
    85,684.88x = 128,523.54 × 23,355.38
  4. Step 4: Simplify right side
    85,684.88x = 3,001,716,115.65
  5. Step 5: Solve for x
    x = 3,001,716,115.65/85,684.88
  6. Step 6: Final answer
    x = 35,032.04

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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.