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Finding the Fourth Proportional to 391,702.21, 537,028.73 and 384,616.33

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Solution

The fourth proportional to 391,702.21, 537,028.73 and 384,616.33 is: 527,313.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,702.21 : 537,028.73 = 384,616.33 : x
  2. Step 2: Convert to fraction form
    391,702.21/537,028.73 = 384,616.33/x
  3. Step 3: Cross multiply
    391,702.21x = 537,028.73 × 384,616.33
  4. Step 4: Simplify right side
    391,702.21x = 206,550,018,856.13
  5. Step 5: Solve for x
    x = 206,550,018,856.13/391,702.21
  6. Step 6: Final answer
    x = 527,313.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.