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Finding the Fourth Proportional to 199,893.04, 275,825.72 and 128,369.94

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Solution

The fourth proportional to 199,893.04, 275,825.72 and 128,369.94 is: 177,133.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,893.04 : 275,825.72 = 128,369.94 : x
  2. Step 2: Convert to fraction form
    199,893.04/275,825.72 = 128,369.94/x
  3. Step 3: Cross multiply
    199,893.04x = 275,825.72 × 128,369.94
  4. Step 4: Simplify right side
    199,893.04x = 35,407,731,126.86
  5. Step 5: Solve for x
    x = 35,407,731,126.86/199,893.04
  6. Step 6: Final answer
    x = 177,133.39

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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.