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Finding the Fourth Proportional to 28,745.66, 43,167.54 and 15,623.66

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Solution

The fourth proportional to 28,745.66, 43,167.54 and 15,623.66 is: 23,462.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,745.66 : 43,167.54 = 15,623.66 : x
  2. Step 2: Convert to fraction form
    28,745.66/43,167.54 = 15,623.66/x
  3. Step 3: Cross multiply
    28,745.66x = 43,167.54 × 15,623.66
  4. Step 4: Simplify right side
    28,745.66x = 674,434,968.00
  5. Step 5: Solve for x
    x = 674,434,968.00/28,745.66
  6. Step 6: Final answer
    x = 23,462.15

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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.