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Finding the Fourth Proportional to 124,671.90, 172,048.59 and 68,084.94

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Solution

The fourth proportional to 124,671.90, 172,048.59 and 68,084.94 is: 93,957.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,671.90 : 172,048.59 = 68,084.94 : x
  2. Step 2: Convert to fraction form
    124,671.90/172,048.59 = 68,084.94/x
  3. Step 3: Cross multiply
    124,671.90x = 172,048.59 × 68,084.94
  4. Step 4: Simplify right side
    124,671.90x = 11,713,917,927.23
  5. Step 5: Solve for x
    x = 11,713,917,927.23/124,671.90
  6. Step 6: Final answer
    x = 93,957.96

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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.