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Finding the Fourth Proportional to 202,066.64, 278,853.90 and 111,425.82

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Solution

The fourth proportional to 202,066.64, 278,853.90 and 111,425.82 is: 153,768.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,066.64 : 278,853.90 = 111,425.82 : x
  2. Step 2: Convert to fraction form
    202,066.64/278,853.90 = 111,425.82/x
  3. Step 3: Cross multiply
    202,066.64x = 278,853.90 × 111,425.82
  4. Step 4: Simplify right side
    202,066.64x = 31,071,524,467.70
  5. Step 5: Solve for x
    x = 31,071,524,467.70/202,066.64
  6. Step 6: Final answer
    x = 153,768.70

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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.