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Finding the Fourth Proportional to 389,577.70, 584,366.55 and 256,608.10

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Solution

The fourth proportional to 389,577.70, 584,366.55 and 256,608.10 is: 384,912.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,577.70 : 584,366.55 = 256,608.10 : x
  2. Step 2: Convert to fraction form
    389,577.70/584,366.55 = 256,608.10/x
  3. Step 3: Cross multiply
    389,577.70x = 584,366.55 × 256,608.10
  4. Step 4: Simplify right side
    389,577.70x = 149,953,190,099.06
  5. Step 5: Solve for x
    x = 149,953,190,099.06/389,577.70
  6. Step 6: Final answer
    x = 384,912.15

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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.