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Finding the Fourth Proportional to 69,588, 104,243.76 and 34,420.32

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Solution

The fourth proportional to 69,588, 104,243.76 and 34,420.32 is: 51,562.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,588 : 104,243.76 = 34,420.32 : x
  2. Step 2: Convert to fraction form
    69,588/104,243.76 = 34,420.32/x
  3. Step 3: Cross multiply
    69,588x = 104,243.76 × 34,420.32
  4. Step 4: Simplify right side
    69,588x = 3,588,103,577.20
  5. Step 5: Solve for x
    x = 3,588,103,577.20/69,588
  6. Step 6: Final answer
    x = 51,562.10

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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.