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Finding the Fourth Proportional to 122,975.37, 169,706.35 and 71,302.50

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Solution

The fourth proportional to 122,975.37, 169,706.35 and 71,302.50 is: 98,397.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,975.37 : 169,706.35 = 71,302.50 : x
  2. Step 2: Convert to fraction form
    122,975.37/169,706.35 = 71,302.50/x
  3. Step 3: Cross multiply
    122,975.37x = 169,706.35 × 71,302.50
  4. Step 4: Simplify right side
    122,975.37x = 12,100,487,020.88
  5. Step 5: Solve for x
    x = 12,100,487,020.88/122,975.37
  6. Step 6: Final answer
    x = 98,397.65

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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.