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Finding the Fourth Proportional to 118,570.68, 163,632.78 and 68,285.88

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Solution

The fourth proportional to 118,570.68, 163,632.78 and 68,285.88 is: 94,237.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,570.68 : 163,632.78 = 68,285.88 : x
  2. Step 2: Convert to fraction form
    118,570.68/163,632.78 = 68,285.88/x
  3. Step 3: Cross multiply
    118,570.68x = 163,632.78 × 68,285.88
  4. Step 4: Simplify right side
    118,570.68x = 11,173,808,379.15
  5. Step 5: Solve for x
    x = 11,173,808,379.15/118,570.68
  6. Step 6: Final answer
    x = 94,237.53

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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.