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Finding the Fourth Proportional to 295,319.20, 442,978.80 and 242,831.20

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Solution

The fourth proportional to 295,319.20, 442,978.80 and 242,831.20 is: 364,246.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,319.20 : 442,978.80 = 242,831.20 : x
  2. Step 2: Convert to fraction form
    295,319.20/442,978.80 = 242,831.20/x
  3. Step 3: Cross multiply
    295,319.20x = 442,978.80 × 242,831.20
  4. Step 4: Simplify right side
    295,319.20x = 107,569,073,578.56
  5. Step 5: Solve for x
    x = 107,569,073,578.56/295,319.20
  6. Step 6: Final answer
    x = 364,246.80

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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.