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Finding the Fourth Proportional to 620,659.04, 929,696.86 and 394,901.16

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Solution

The fourth proportional to 620,659.04, 929,696.86 and 394,901.16 is: 591,529.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,659.04 : 929,696.86 = 394,901.16 : x
  2. Step 2: Convert to fraction form
    620,659.04/929,696.86 = 394,901.16/x
  3. Step 3: Cross multiply
    620,659.04x = 929,696.86 × 394,901.16
  4. Step 4: Simplify right side
    620,659.04x = 367,138,368,462.36
  5. Step 5: Solve for x
    x = 367,138,368,462.36/620,659.04
  6. Step 6: Final answer
    x = 591,529.88

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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.