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Finding the Fourth Proportional to 393,692.78, 543,296.16 and 230,380.67

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Solution

The fourth proportional to 393,692.78, 543,296.16 and 230,380.67 is: 317,925.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,692.78 : 543,296.16 = 230,380.67 : x
  2. Step 2: Convert to fraction form
    393,692.78/543,296.16 = 230,380.67/x
  3. Step 3: Cross multiply
    393,692.78x = 543,296.16 × 230,380.67
  4. Step 4: Simplify right side
    393,692.78x = 125,164,934,707.47
  5. Step 5: Solve for x
    x = 125,164,934,707.47/393,692.78
  6. Step 6: Final answer
    x = 317,925.40

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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.