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Finding the Fourth Proportional to 124,566.84, 171,902.16 and 67,978.08

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Solution

The fourth proportional to 124,566.84, 171,902.16 and 67,978.08 is: 93,809.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,566.84 : 171,902.16 = 67,978.08 : x
  2. Step 2: Convert to fraction form
    124,566.84/171,902.16 = 67,978.08/x
  3. Step 3: Cross multiply
    124,566.84x = 171,902.16 × 67,978.08
  4. Step 4: Simplify right side
    124,566.84x = 11,685,578,784.65
  5. Step 5: Solve for x
    x = 11,685,578,784.65/124,566.84
  6. Step 6: Final answer
    x = 93,809.71

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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.