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Finding the Fourth Proportional to 395,097.60, 594,028.80 and 386,803.20

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Solution

The fourth proportional to 395,097.60, 594,028.80 and 386,803.20 is: 581,558.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,097.60 : 594,028.80 = 386,803.20 : x
  2. Step 2: Convert to fraction form
    395,097.60/594,028.80 = 386,803.20/x
  3. Step 3: Cross multiply
    395,097.60x = 594,028.80 × 386,803.20
  4. Step 4: Simplify right side
    395,097.60x = 229,772,240,732.16
  5. Step 5: Solve for x
    x = 229,772,240,732.16/395,097.60
  6. Step 6: Final answer
    x = 581,558.18

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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.