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Finding the Fourth Proportional to 103,686.91, 143,087.97 and 60,674.67

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Solution

The fourth proportional to 103,686.91, 143,087.97 and 60,674.67 is: 83,731.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,686.91 : 143,087.97 = 60,674.67 : x
  2. Step 2: Convert to fraction form
    103,686.91/143,087.97 = 60,674.67/x
  3. Step 3: Cross multiply
    103,686.91x = 143,087.97 × 60,674.67
  4. Step 4: Simplify right side
    103,686.91x = 8,681,815,209.03
  5. Step 5: Solve for x
    x = 8,681,815,209.03/103,686.91
  6. Step 6: Final answer
    x = 83,731.06

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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.