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Finding the Fourth Proportional to 228,605.42, 315,461.59 and 126,624.94

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Solution

The fourth proportional to 228,605.42, 315,461.59 and 126,624.94 is: 174,734.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,605.42 : 315,461.59 = 126,624.94 : x
  2. Step 2: Convert to fraction form
    228,605.42/315,461.59 = 126,624.94/x
  3. Step 3: Cross multiply
    228,605.42x = 315,461.59 × 126,624.94
  4. Step 4: Simplify right side
    228,605.42x = 39,945,303,800.84
  5. Step 5: Solve for x
    x = 39,945,303,800.84/228,605.42
  6. Step 6: Final answer
    x = 174,734.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.