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Finding the Fourth Proportional to 190,710.73, 286,056.85 and 70,791.06

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Solution

The fourth proportional to 190,710.73, 286,056.85 and 70,791.06 is: 106,183.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,710.73 : 286,056.85 = 70,791.06 : x
  2. Step 2: Convert to fraction form
    190,710.73/286,056.85 = 70,791.06/x
  3. Step 3: Cross multiply
    190,710.73x = 286,056.85 × 70,791.06
  4. Step 4: Simplify right side
    190,710.73x = 20,250,267,631.76
  5. Step 5: Solve for x
    x = 20,250,267,631.76/190,710.73
  6. Step 6: Final answer
    x = 106,183.16

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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.