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Finding the Fourth Proportional to 393,602.60, 589,529.10 and 323,618.60

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Solution

The fourth proportional to 393,602.60, 589,529.10 and 323,618.60 is: 484,708.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,602.60 : 589,529.10 = 323,618.60 : x
  2. Step 2: Convert to fraction form
    393,602.60/589,529.10 = 323,618.60/x
  3. Step 3: Cross multiply
    393,602.60x = 589,529.10 × 323,618.60
  4. Step 4: Simplify right side
    393,602.60x = 190,782,582,001.26
  5. Step 5: Solve for x
    x = 190,782,582,001.26/393,602.60
  6. Step 6: Final answer
    x = 484,708.64

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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.