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Finding the Fourth Proportional to 386,758.70, 533,717.00 and 214,667.77

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Solution

The fourth proportional to 386,758.70, 533,717.00 and 214,667.77 is: 296,235.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,758.70 : 533,717.00 = 214,667.77 : x
  2. Step 2: Convert to fraction form
    386,758.70/533,717.00 = 214,667.77/x
  3. Step 3: Cross multiply
    386,758.70x = 533,717.00 × 214,667.77
  4. Step 4: Simplify right side
    386,758.70x = 114,571,837,599.18
  5. Step 5: Solve for x
    x = 114,571,837,599.18/386,758.70
  6. Step 6: Final answer
    x = 296,235.97

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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.