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Finding the Fourth Proportional to 297,437.58, 445,215.15 and 190,678.86

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Solution

The fourth proportional to 297,437.58, 445,215.15 and 190,678.86 is: 285,414.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,437.58 : 445,215.15 = 190,678.86 : x
  2. Step 2: Convert to fraction form
    297,437.58/445,215.15 = 190,678.86/x
  3. Step 3: Cross multiply
    297,437.58x = 445,215.15 × 190,678.86
  4. Step 4: Simplify right side
    297,437.58x = 84,893,117,256.73
  5. Step 5: Solve for x
    x = 84,893,117,256.73/297,437.58
  6. Step 6: Final answer
    x = 285,414.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.