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Finding the Fourth Proportional to 374,535.53, 561,859.23 and 137,860.21

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Solution

The fourth proportional to 374,535.53, 561,859.23 and 137,860.21 is: 206,810.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,535.53 : 561,859.23 = 137,860.21 : x
  2. Step 2: Convert to fraction form
    374,535.53/561,859.23 = 137,860.21/x
  3. Step 3: Cross multiply
    374,535.53x = 561,859.23 × 137,860.21
  4. Step 4: Simplify right side
    374,535.53x = 77,458,032,657.54
  5. Step 5: Solve for x
    x = 77,458,032,657.54/374,535.53
  6. Step 6: Final answer
    x = 206,810.91

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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.