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Finding the Fourth Proportional to 28,692.83, 43,041.73 and 7,916.33

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Solution

The fourth proportional to 28,692.83, 43,041.73 and 7,916.33 is: 11,875.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,692.83 : 43,041.73 = 7,916.33 : x
  2. Step 2: Convert to fraction form
    28,692.83/43,041.73 = 7,916.33/x
  3. Step 3: Cross multiply
    28,692.83x = 43,041.73 × 7,916.33
  4. Step 4: Simplify right side
    28,692.83x = 340,732,498.87
  5. Step 5: Solve for x
    x = 340,732,498.87/28,692.83
  6. Step 6: Final answer
    x = 11,875.18

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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.