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Finding the Fourth Proportional to 384,765.92, 530,974.38 and 215,000.44

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Solution

The fourth proportional to 384,765.92, 530,974.38 and 215,000.44 is: 296,699.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,765.92 : 530,974.38 = 215,000.44 : x
  2. Step 2: Convert to fraction form
    384,765.92/530,974.38 = 215,000.44/x
  3. Step 3: Cross multiply
    384,765.92x = 530,974.38 × 215,000.44
  4. Step 4: Simplify right side
    384,765.92x = 114,159,725,328.73
  5. Step 5: Solve for x
    x = 114,159,725,328.73/384,765.92
  6. Step 6: Final answer
    x = 296,699.16

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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.