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Finding the Fourth Proportional to 65,811.68, 98,717.28 and 19,064.48

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Solution

The fourth proportional to 65,811.68, 98,717.28 and 19,064.48 is: 28,596.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,811.68 : 98,717.28 = 19,064.48 : x
  2. Step 2: Convert to fraction form
    65,811.68/98,717.28 = 19,064.48/x
  3. Step 3: Cross multiply
    65,811.68x = 98,717.28 × 19,064.48
  4. Step 4: Simplify right side
    65,811.68x = 1,881,993,610.21
  5. Step 5: Solve for x
    x = 1,881,993,610.21/65,811.68
  6. Step 6: Final answer
    x = 28,596.65

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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.