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Finding the Fourth Proportional to 28,675.61, 43,035.51 and 14,458.61

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Solution

The fourth proportional to 28,675.61, 43,035.51 and 14,458.61 is: 21,699.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,675.61 : 43,035.51 = 14,458.61 : x
  2. Step 2: Convert to fraction form
    28,675.61/43,035.51 = 14,458.61/x
  3. Step 3: Cross multiply
    28,675.61x = 43,035.51 × 14,458.61
  4. Step 4: Simplify right side
    28,675.61x = 622,233,440.06
  5. Step 5: Solve for x
    x = 622,233,440.06/28,675.61
  6. Step 6: Final answer
    x = 21,699.05

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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.