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Finding the Fourth Proportional to 199,389.72, 275,076.74 and 127,811.64

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Solution

The fourth proportional to 199,389.72, 275,076.74 and 127,811.64 is: 176,328.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,389.72 : 275,076.74 = 127,811.64 : x
  2. Step 2: Convert to fraction form
    199,389.72/275,076.74 = 127,811.64/x
  3. Step 3: Cross multiply
    199,389.72x = 275,076.74 × 127,811.64
  4. Step 4: Simplify right side
    199,389.72x = 35,158,009,265.25
  5. Step 5: Solve for x
    x = 35,158,009,265.25/199,389.72
  6. Step 6: Final answer
    x = 176,328.09

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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.