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Finding the Fourth Proportional to 124,570.10, 171,906.68 and 67,981.47

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Solution

The fourth proportional to 124,570.10, 171,906.68 and 67,981.47 is: 93,814.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,570.10 : 171,906.68 = 67,981.47 : x
  2. Step 2: Convert to fraction form
    124,570.10/171,906.68 = 67,981.47/x
  3. Step 3: Cross multiply
    124,570.10x = 171,906.68 × 67,981.47
  4. Step 4: Simplify right side
    124,570.10x = 11,686,469,106.64
  5. Step 5: Solve for x
    x = 11,686,469,106.64/124,570.10
  6. Step 6: Final answer
    x = 93,814.40

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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.