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Finding the Fourth Proportional to 69,804.63, 96,331.41 and 42,931.26

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Solution

The fourth proportional to 69,804.63, 96,331.41 and 42,931.26 is: 59,245.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,804.63 : 96,331.41 = 42,931.26 : x
  2. Step 2: Convert to fraction form
    69,804.63/96,331.41 = 42,931.26/x
  3. Step 3: Cross multiply
    69,804.63x = 96,331.41 × 42,931.26
  4. Step 4: Simplify right side
    69,804.63x = 4,135,628,808.88
  5. Step 5: Solve for x
    x = 4,135,628,808.88/69,804.63
  6. Step 6: Final answer
    x = 59,245.77

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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.