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Finding the Fourth Proportional to 371,782.99, 557,673.34 and 105,543.69

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Solution

The fourth proportional to 371,782.99, 557,673.34 and 105,543.69 is: 158,315.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,782.99 : 557,673.34 = 105,543.69 : x
  2. Step 2: Convert to fraction form
    371,782.99/557,673.34 = 105,543.69/x
  3. Step 3: Cross multiply
    371,782.99x = 557,673.34 × 105,543.69
  4. Step 4: Simplify right side
    371,782.99x = 58,858,902,118.22
  5. Step 5: Solve for x
    x = 58,858,902,118.22/371,782.99
  6. Step 6: Final answer
    x = 158,315.21

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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.