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Finding the Fourth Proportional to 261,887.93, 361,393.68 and 153,002.36

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Solution

The fourth proportional to 261,887.93, 361,393.68 and 153,002.36 is: 211,136.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,887.93 : 361,393.68 = 153,002.36 : x
  2. Step 2: Convert to fraction form
    261,887.93/361,393.68 = 153,002.36/x
  3. Step 3: Cross multiply
    261,887.93x = 361,393.68 × 153,002.36
  4. Step 4: Simplify right side
    261,887.93x = 55,294,084,122.12
  5. Step 5: Solve for x
    x = 55,294,084,122.12/261,887.93
  6. Step 6: Final answer
    x = 211,136.44

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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.