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Finding the Fourth Proportional to 54,276.28, 74,840.96 and 34,108.90

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Solution

The fourth proportional to 54,276.28, 74,840.96 and 34,108.90 is: 47,032.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,276.28 : 74,840.96 = 34,108.90 : x
  2. Step 2: Convert to fraction form
    54,276.28/74,840.96 = 34,108.90/x
  3. Step 3: Cross multiply
    54,276.28x = 74,840.96 × 34,108.90
  4. Step 4: Simplify right side
    54,276.28x = 2,552,742,820.54
  5. Step 5: Solve for x
    x = 2,552,742,820.54/54,276.28
  6. Step 6: Final answer
    x = 47,032.38

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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.