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Finding the Fourth Proportional to 107,075.01, 147,781.82 and 61,744.88

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Solution

The fourth proportional to 107,075.01, 147,781.82 and 61,744.88 is: 85,218.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,075.01 : 147,781.82 = 61,744.88 : x
  2. Step 2: Convert to fraction form
    107,075.01/147,781.82 = 61,744.88/x
  3. Step 3: Cross multiply
    107,075.01x = 147,781.82 × 61,744.88
  4. Step 4: Simplify right side
    107,075.01x = 9,124,770,918.58
  5. Step 5: Solve for x
    x = 9,124,770,918.58/107,075.01
  6. Step 6: Final answer
    x = 85,218.49

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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.