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Finding the Fourth Proportional to 104,782.86, 144,600.36 and 57,036.53

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Solution

The fourth proportional to 104,782.86, 144,600.36 and 57,036.53 is: 78,710.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,782.86 : 144,600.36 = 57,036.53 : x
  2. Step 2: Convert to fraction form
    104,782.86/144,600.36 = 57,036.53/x
  3. Step 3: Cross multiply
    104,782.86x = 144,600.36 × 57,036.53
  4. Step 4: Simplify right side
    104,782.86x = 8,247,502,918.76
  5. Step 5: Solve for x
    x = 8,247,502,918.76/104,782.86
  6. Step 6: Final answer
    x = 78,710.42

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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.