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Finding the Fourth Proportional to 204,831.50, 307,246.80 and 55,071.80

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Solution

The fourth proportional to 204,831.50, 307,246.80 and 55,071.80 is: 82,607.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,831.50 : 307,246.80 = 55,071.80 : x
  2. Step 2: Convert to fraction form
    204,831.50/307,246.80 = 55,071.80/x
  3. Step 3: Cross multiply
    204,831.50x = 307,246.80 × 55,071.80
  4. Step 4: Simplify right side
    204,831.50x = 16,920,634,320.24
  5. Step 5: Solve for x
    x = 16,920,634,320.24/204,831.50
  6. Step 6: Final answer
    x = 82,607.58

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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.