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Finding the Fourth Proportional to 74,168.72, 102,147.44 and 64,093.84

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Solution

The fourth proportional to 74,168.72, 102,147.44 and 64,093.84 is: 88,272.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,168.72 : 102,147.44 = 64,093.84 : x
  2. Step 2: Convert to fraction form
    74,168.72/102,147.44 = 64,093.84/x
  3. Step 3: Cross multiply
    74,168.72x = 102,147.44 × 64,093.84
  4. Step 4: Simplify right side
    74,168.72x = 6,547,021,675.77
  5. Step 5: Solve for x
    x = 6,547,021,675.77/74,168.72
  6. Step 6: Final answer
    x = 88,272.01

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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.