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Finding the Fourth Proportional to 378,778.06, 524,971.14 and 371,692.18

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Solution

The fourth proportional to 378,778.06, 524,971.14 and 371,692.18 is: 515,150.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,778.06 : 524,971.14 = 371,692.18 : x
  2. Step 2: Convert to fraction form
    378,778.06/524,971.14 = 371,692.18/x
  3. Step 3: Cross multiply
    378,778.06x = 524,971.14 × 371,692.18
  4. Step 4: Simplify right side
    378,778.06x = 195,127,667,463.69
  5. Step 5: Solve for x
    x = 195,127,667,463.69/378,778.06
  6. Step 6: Final answer
    x = 515,150.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.