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Finding the Fourth Proportional to 389,952.30, 583,944.30 and 256,107.90

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Solution

The fourth proportional to 389,952.30, 583,944.30 and 256,107.90 is: 383,515.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,952.30 : 583,944.30 = 256,107.90 : x
  2. Step 2: Convert to fraction form
    389,952.30/583,944.30 = 256,107.90/x
  3. Step 3: Cross multiply
    389,952.30x = 583,944.30 × 256,107.90
  4. Step 4: Simplify right side
    389,952.30x = 149,552,748,389.97
  5. Step 5: Solve for x
    x = 149,552,748,389.97/389,952.30
  6. Step 6: Final answer
    x = 383,515.49

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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.