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Finding the Fourth Proportional to 84,487.68, 116,605.28 and 48,670.72

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Solution

The fourth proportional to 84,487.68, 116,605.28 and 48,670.72 is: 67,172.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,487.68 : 116,605.28 = 48,670.72 : x
  2. Step 2: Convert to fraction form
    84,487.68/116,605.28 = 48,670.72/x
  3. Step 3: Cross multiply
    84,487.68x = 116,605.28 × 48,670.72
  4. Step 4: Simplify right side
    84,487.68x = 5,675,262,933.40
  5. Step 5: Solve for x
    x = 5,675,262,933.40/84,487.68
  6. Step 6: Final answer
    x = 67,172.67

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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.