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Finding the Fourth Proportional to 64,797.80, 89,417.94 and 43,573.64

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Solution

The fourth proportional to 64,797.80, 89,417.94 and 43,573.64 is: 60,129.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,797.80 : 89,417.94 = 43,573.64 : x
  2. Step 2: Convert to fraction form
    64,797.80/89,417.94 = 43,573.64/x
  3. Step 3: Cross multiply
    64,797.80x = 89,417.94 × 43,573.64
  4. Step 4: Simplify right side
    64,797.80x = 3,896,265,127.10
  5. Step 5: Solve for x
    x = 3,896,265,127.10/64,797.80
  6. Step 6: Final answer
    x = 60,129.59

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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.