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Finding the Fourth Proportional to 28,894.84, 43,343.76 and 9,174.94

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Solution

The fourth proportional to 28,894.84, 43,343.76 and 9,174.94 is: 13,762.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,894.84 : 43,343.76 = 9,174.94 : x
  2. Step 2: Convert to fraction form
    28,894.84/43,343.76 = 9,174.94/x
  3. Step 3: Cross multiply
    28,894.84x = 43,343.76 × 9,174.94
  4. Step 4: Simplify right side
    28,894.84x = 397,676,397.37
  5. Step 5: Solve for x
    x = 397,676,397.37/28,894.84
  6. Step 6: Final answer
    x = 13,762.89

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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.