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Finding the Fourth Proportional to 68,984.37, 103,420.11 and 35,713.93

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Solution

The fourth proportional to 68,984.37, 103,420.11 and 35,713.93 is: 53,541.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,984.37 : 103,420.11 = 35,713.93 : x
  2. Step 2: Convert to fraction form
    68,984.37/103,420.11 = 35,713.93/x
  3. Step 3: Cross multiply
    68,984.37x = 103,420.11 × 35,713.93
  4. Step 4: Simplify right side
    68,984.37x = 3,693,538,569.13
  5. Step 5: Solve for x
    x = 3,693,538,569.13/68,984.37
  6. Step 6: Final answer
    x = 53,541.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.