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Finding the Fourth Proportional to 405,014.77, 558,501.74 and 347,843.39

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Solution

The fourth proportional to 405,014.77, 558,501.74 and 347,843.39 is: 479,664.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,014.77 : 558,501.74 = 347,843.39 : x
  2. Step 2: Convert to fraction form
    405,014.77/558,501.74 = 347,843.39/x
  3. Step 3: Cross multiply
    405,014.77x = 558,501.74 × 347,843.39
  4. Step 4: Simplify right side
    405,014.77x = 194,271,138,562.50
  5. Step 5: Solve for x
    x = 194,271,138,562.50/405,014.77
  6. Step 6: Final answer
    x = 479,664.34

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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.