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Finding the Fourth Proportional to 192,128.49, 265,132.71 and 111,553.74

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Solution

The fourth proportional to 192,128.49, 265,132.71 and 111,553.74 is: 153,941.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,128.49 : 265,132.71 = 111,553.74 : x
  2. Step 2: Convert to fraction form
    192,128.49/265,132.71 = 111,553.74/x
  3. Step 3: Cross multiply
    192,128.49x = 265,132.71 × 111,553.74
  4. Step 4: Simplify right side
    192,128.49x = 29,576,545,396.84
  5. Step 5: Solve for x
    x = 29,576,545,396.84/192,128.49
  6. Step 6: Final answer
    x = 153,941.49

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1.5x scale

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.