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Finding the Fourth Proportional to 52,791.68, 72,852.50 and 28,918.35

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Solution

The fourth proportional to 52,791.68, 72,852.50 and 28,918.35 is: 39,907.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,791.68 : 72,852.50 = 28,918.35 : x
  2. Step 2: Convert to fraction form
    52,791.68/72,852.50 = 28,918.35/x
  3. Step 3: Cross multiply
    52,791.68x = 72,852.50 × 28,918.35
  4. Step 4: Simplify right side
    52,791.68x = 2,106,774,003.01
  5. Step 5: Solve for x
    x = 2,106,774,003.01/52,791.68
  6. Step 6: Final answer
    x = 39,907.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.