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Finding the Fourth Proportional to 64,809.36, 89,459.28 and 37,960.52

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Solution

The fourth proportional to 64,809.36, 89,459.28 and 37,960.52 is: 52,398.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,809.36 : 89,459.28 = 37,960.52 : x
  2. Step 2: Convert to fraction form
    64,809.36/89,459.28 = 37,960.52/x
  3. Step 3: Cross multiply
    64,809.36x = 89,459.28 × 37,960.52
  4. Step 4: Simplify right side
    64,809.36x = 3,395,920,787.63
  5. Step 5: Solve for x
    x = 3,395,920,787.63/64,809.36
  6. Step 6: Final answer
    x = 52,398.62

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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.