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Finding the Fourth Proportional to 395,280.40, 592,920.60 and 173,664.40

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Solution

The fourth proportional to 395,280.40, 592,920.60 and 173,664.40 is: 260,496.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,280.40 : 592,920.60 = 173,664.40 : x
  2. Step 2: Convert to fraction form
    395,280.40/592,920.60 = 173,664.40/x
  3. Step 3: Cross multiply
    395,280.40x = 592,920.60 × 173,664.40
  4. Step 4: Simplify right side
    395,280.40x = 102,969,200,246.64
  5. Step 5: Solve for x
    x = 102,969,200,246.64/395,280.40
  6. Step 6: Final answer
    x = 260,496.60

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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.