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Finding the Fourth Proportional to 543,436.54, 749,965.84 and 301,719.12

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Solution

The fourth proportional to 543,436.54, 749,965.84 and 301,719.12 is: 416,385.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,436.54 : 749,965.84 = 301,719.12 : x
  2. Step 2: Convert to fraction form
    543,436.54/749,965.84 = 301,719.12/x
  3. Step 3: Cross multiply
    543,436.54x = 749,965.84 × 301,719.12
  4. Step 4: Simplify right side
    543,436.54x = 226,279,032,520.56
  5. Step 5: Solve for x
    x = 226,279,032,520.56/543,436.54
  6. Step 6: Final answer
    x = 416,385.39

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Half scale
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Double scale
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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.