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Finding the Fourth Proportional to 124,706.50, 172,095 and 68,117.86

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Solution

The fourth proportional to 124,706.50, 172,095 and 68,117.86 is: 94,002.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,706.50 : 172,095 = 68,117.86 : x
  2. Step 2: Convert to fraction form
    124,706.50/172,095 = 68,117.86/x
  3. Step 3: Cross multiply
    124,706.50x = 172,095 × 68,117.86
  4. Step 4: Simplify right side
    124,706.50x = 11,722,743,116.70
  5. Step 5: Solve for x
    x = 11,722,743,116.70/124,706.50
  6. Step 6: Final answer
    x = 94,002.66

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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.