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Finding the Fourth Proportional to 65,871.93, 98,810.63 and 19,124.81

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Solution

The fourth proportional to 65,871.93, 98,810.63 and 19,124.81 is: 28,688.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,871.93 : 98,810.63 = 19,124.81 : x
  2. Step 2: Convert to fraction form
    65,871.93/98,810.63 = 19,124.81/x
  3. Step 3: Cross multiply
    65,871.93x = 98,810.63 × 19,124.81
  4. Step 4: Simplify right side
    65,871.93x = 1,889,734,524.73
  5. Step 5: Solve for x
    x = 1,889,734,524.73/65,871.93
  6. Step 6: Final answer
    x = 28,688.01

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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.