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Finding the Fourth Proportional to 575,297.75, 863,071.27 and 220,311.81

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Solution

The fourth proportional to 575,297.75, 863,071.27 and 220,311.81 is: 330,515.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,297.75 : 863,071.27 = 220,311.81 : x
  2. Step 2: Convert to fraction form
    575,297.75/863,071.27 = 220,311.81/x
  3. Step 3: Cross multiply
    575,297.75x = 863,071.27 × 220,311.81
  4. Step 4: Simplify right side
    575,297.75x = 190,144,793,101.92
  5. Step 5: Solve for x
    x = 190,144,793,101.92/575,297.75
  6. Step 6: Final answer
    x = 330,515.45

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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.