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Finding the Fourth Proportional to 690,400.56, 952,692.12 and 384,453.84

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Solution

The fourth proportional to 690,400.56, 952,692.12 and 384,453.84 is: 530,512.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,400.56 : 952,692.12 = 384,453.84 : x
  2. Step 2: Convert to fraction form
    690,400.56/952,692.12 = 384,453.84/x
  3. Step 3: Cross multiply
    690,400.56x = 952,692.12 × 384,453.84
  4. Step 4: Simplify right side
    690,400.56x = 366,266,143,871.74
  5. Step 5: Solve for x
    x = 366,266,143,871.74/690,400.56
  6. Step 6: Final answer
    x = 530,512.52

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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.