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Finding the Fourth Proportional to 101,200.53, 139,640.99 and 58,751.67

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Solution

The fourth proportional to 101,200.53, 139,640.99 and 58,751.67 is: 81,068.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,200.53 : 139,640.99 = 58,751.67 : x
  2. Step 2: Convert to fraction form
    101,200.53/139,640.99 = 58,751.67/x
  3. Step 3: Cross multiply
    101,200.53x = 139,640.99 × 58,751.67
  4. Step 4: Simplify right side
    101,200.53x = 8,204,141,069.19
  5. Step 5: Solve for x
    x = 8,204,141,069.19/101,200.53
  6. Step 6: Final answer
    x = 81,068.16

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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.