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Finding the Fourth Proportional to 201,682.40, 278,319.39 and 111,036.45

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Solution

The fourth proportional to 201,682.40, 278,319.39 and 111,036.45 is: 153,229.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,682.40 : 278,319.39 = 111,036.45 : x
  2. Step 2: Convert to fraction form
    201,682.40/278,319.39 = 111,036.45/x
  3. Step 3: Cross multiply
    201,682.40x = 278,319.39 × 111,036.45
  4. Step 4: Simplify right side
    201,682.40x = 30,903,597,031.77
  5. Step 5: Solve for x
    x = 30,903,597,031.77/201,682.40
  6. Step 6: Final answer
    x = 153,229.02

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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.