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Finding the Fourth Proportional to 608,309.68, 839,188.34 and 393,519.01

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Solution

The fourth proportional to 608,309.68, 839,188.34 and 393,519.01 is: 542,875.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,309.68 : 839,188.34 = 393,519.01 : x
  2. Step 2: Convert to fraction form
    608,309.68/839,188.34 = 393,519.01/x
  3. Step 3: Cross multiply
    608,309.68x = 839,188.34 × 393,519.01
  4. Step 4: Simplify right side
    608,309.68x = 330,236,562,792.75
  5. Step 5: Solve for x
    x = 330,236,562,792.75/608,309.68
  6. Step 6: Final answer
    x = 542,875.73

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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.