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Finding the Fourth Proportional to 198,357.82, 273,729.98 and 112,310.32

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Solution

The fourth proportional to 198,357.82, 273,729.98 and 112,310.32 is: 154,986.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,357.82 : 273,729.98 = 112,310.32 : x
  2. Step 2: Convert to fraction form
    198,357.82/273,729.98 = 112,310.32/x
  3. Step 3: Cross multiply
    198,357.82x = 273,729.98 × 112,310.32
  4. Step 4: Simplify right side
    198,357.82x = 30,742,701,647.39
  5. Step 5: Solve for x
    x = 30,742,701,647.39/198,357.82
  6. Step 6: Final answer
    x = 154,986.08

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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.