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Finding the Fourth Proportional to 118,315.98, 163,276.11 and 68,011.98

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Solution

The fourth proportional to 118,315.98, 163,276.11 and 68,011.98 is: 93,856.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,315.98 : 163,276.11 = 68,011.98 : x
  2. Step 2: Convert to fraction form
    118,315.98/163,276.11 = 68,011.98/x
  3. Step 3: Cross multiply
    118,315.98x = 163,276.11 × 68,011.98
  4. Step 4: Simplify right side
    118,315.98x = 11,104,731,527.80
  5. Step 5: Solve for x
    x = 11,104,731,527.80/118,315.98
  6. Step 6: Final answer
    x = 93,856.57

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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.