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Finding the Fourth Proportional to 110,717.72, 166,035.80 and 39,621.07

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Solution

The fourth proportional to 110,717.72, 166,035.80 and 39,621.07 is: 59,417.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,717.72 : 166,035.80 = 39,621.07 : x
  2. Step 2: Convert to fraction form
    110,717.72/166,035.80 = 39,621.07/x
  3. Step 3: Cross multiply
    110,717.72x = 166,035.80 × 39,621.07
  4. Step 4: Simplify right side
    110,717.72x = 6,578,516,054.31
  5. Step 5: Solve for x
    x = 6,578,516,054.31/110,717.72
  6. Step 6: Final answer
    x = 59,417.01

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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.