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Finding the Fourth Proportional to 395,569.20, 593,645.40 and 262,405.20

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Solution

The fourth proportional to 395,569.20, 593,645.40 and 262,405.20 is: 393,801.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,569.20 : 593,645.40 = 262,405.20 : x
  2. Step 2: Convert to fraction form
    395,569.20/593,645.40 = 262,405.20/x
  3. Step 3: Cross multiply
    395,569.20x = 593,645.40 × 262,405.20
  4. Step 4: Simplify right side
    395,569.20x = 155,775,639,916.08
  5. Step 5: Solve for x
    x = 155,775,639,916.08/395,569.20
  6. Step 6: Final answer
    x = 393,801.24

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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.