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Finding the Fourth Proportional to 124,473.72, 171,771.66 and 67,881.72

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Solution

The fourth proportional to 124,473.72, 171,771.66 and 67,881.72 is: 93,675.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,473.72 : 171,771.66 = 67,881.72 : x
  2. Step 2: Convert to fraction form
    124,473.72/171,771.66 = 67,881.72/x
  3. Step 3: Cross multiply
    124,473.72x = 171,771.66 × 67,881.72
  4. Step 4: Simplify right side
    124,473.72x = 11,660,155,728.06
  5. Step 5: Solve for x
    x = 11,660,155,728.06/124,473.72
  6. Step 6: Final answer
    x = 93,675.64

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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.