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Finding the Fourth Proportional to 190,718.88, 286,078.38 and 66,059.88

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Solution

The fourth proportional to 190,718.88, 286,078.38 and 66,059.88 is: 99,089.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,718.88 : 286,078.38 = 66,059.88 : x
  2. Step 2: Convert to fraction form
    190,718.88/286,078.38 = 66,059.88/x
  3. Step 3: Cross multiply
    190,718.88x = 286,078.38 × 66,059.88
  4. Step 4: Simplify right side
    190,718.88x = 18,898,303,453.39
  5. Step 5: Solve for x
    x = 18,898,303,453.39/190,718.88
  6. Step 6: Final answer
    x = 99,089.84

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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.