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Finding the Fourth Proportional to 89,843.72, 134,848.58 and 45,501.64

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Solution

The fourth proportional to 89,843.72, 134,848.58 and 45,501.64 is: 68,294.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,843.72 : 134,848.58 = 45,501.64 : x
  2. Step 2: Convert to fraction form
    89,843.72/134,848.58 = 45,501.64/x
  3. Step 3: Cross multiply
    89,843.72x = 134,848.58 × 45,501.64
  4. Step 4: Simplify right side
    89,843.72x = 6,135,831,541.67
  5. Step 5: Solve for x
    x = 6,135,831,541.67/89,843.72
  6. Step 6: Final answer
    x = 68,294.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.