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Finding the Fourth Proportional to 356,424.30, 534,735.54 and 289,699.20

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Solution

The fourth proportional to 356,424.30, 534,735.54 and 289,699.20 is: 434,629.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,424.30 : 534,735.54 = 289,699.20 : x
  2. Step 2: Convert to fraction form
    356,424.30/534,735.54 = 289,699.20/x
  3. Step 3: Cross multiply
    356,424.30x = 534,735.54 × 289,699.20
  4. Step 4: Simplify right side
    356,424.30x = 154,912,458,149.57
  5. Step 5: Solve for x
    x = 154,912,458,149.57/356,424.30
  6. Step 6: Final answer
    x = 434,629.34

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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.