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Finding the Fourth Proportional to 28,866, 43,075.62 and 25,755.60

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Solution

The fourth proportional to 28,866, 43,075.62 and 25,755.60 is: 38,434.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,866 : 43,075.62 = 25,755.60 : x
  2. Step 2: Convert to fraction form
    28,866/43,075.62 = 25,755.60/x
  3. Step 3: Cross multiply
    28,866x = 43,075.62 × 25,755.60
  4. Step 4: Simplify right side
    28,866x = 1,109,438,438.47
  5. Step 5: Solve for x
    x = 1,109,438,438.47/28,866
  6. Step 6: Final answer
    x = 38,434.09

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.