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Finding the Fourth Proportional to 190,673.60, 286,188.78 and 100,783.03

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Solution

The fourth proportional to 190,673.60, 286,188.78 and 100,783.03 is: 151,268.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,673.60 : 286,188.78 = 100,783.03 : x
  2. Step 2: Convert to fraction form
    190,673.60/286,188.78 = 100,783.03/x
  3. Step 3: Cross multiply
    190,673.60x = 286,188.78 × 100,783.03
  4. Step 4: Simplify right side
    190,673.60x = 28,842,972,400.40
  5. Step 5: Solve for x
    x = 28,842,972,400.40/190,673.60
  6. Step 6: Final answer
    x = 151,268.83

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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.