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Finding the Fourth Proportional to 389,253.36, 584,101.68 and 256,196.28

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Solution

The fourth proportional to 389,253.36, 584,101.68 and 256,196.28 is: 384,440.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,253.36 : 584,101.68 = 256,196.28 : x
  2. Step 2: Convert to fraction form
    389,253.36/584,101.68 = 256,196.28/x
  3. Step 3: Cross multiply
    389,253.36x = 584,101.68 × 256,196.28
  4. Step 4: Simplify right side
    389,253.36x = 149,644,677,557.75
  5. Step 5: Solve for x
    x = 149,644,677,557.75/389,253.36
  6. Step 6: Final answer
    x = 384,440.30

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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.