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Finding the Fourth Proportional to 53,978.36, 74,491.32 and 32,755.28

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Solution

The fourth proportional to 53,978.36, 74,491.32 and 32,755.28 is: 45,203.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,978.36 : 74,491.32 = 32,755.28 : x
  2. Step 2: Convert to fraction form
    53,978.36/74,491.32 = 32,755.28/x
  3. Step 3: Cross multiply
    53,978.36x = 74,491.32 × 32,755.28
  4. Step 4: Simplify right side
    53,978.36x = 2,439,984,044.17
  5. Step 5: Solve for x
    x = 2,439,984,044.17/53,978.36
  6. Step 6: Final answer
    x = 45,203.00

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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.