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Finding the Fourth Proportional to 199,898.04, 275,832.60 and 128,374.92

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Solution

The fourth proportional to 199,898.04, 275,832.60 and 128,374.92 is: 177,140.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,898.04 : 275,832.60 = 128,374.92 : x
  2. Step 2: Convert to fraction form
    199,898.04/275,832.60 = 128,374.92/x
  3. Step 3: Cross multiply
    199,898.04x = 275,832.60 × 128,374.92
  4. Step 4: Simplify right side
    199,898.04x = 35,409,987,958.39
  5. Step 5: Solve for x
    x = 35,409,987,958.39/199,898.04
  6. Step 6: Final answer
    x = 177,140.25

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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.