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Finding the Fourth Proportional to 190,894.40, 286,268.64 and 62,780.88

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Solution

The fourth proportional to 190,894.40, 286,268.64 and 62,780.88 is: 94,147.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,894.40 : 286,268.64 = 62,780.88 : x
  2. Step 2: Convert to fraction form
    190,894.40/286,268.64 = 62,780.88/x
  3. Step 3: Cross multiply
    190,894.40x = 286,268.64 × 62,780.88
  4. Step 4: Simplify right side
    190,894.40x = 17,972,197,135.60
  5. Step 5: Solve for x
    x = 17,972,197,135.60/190,894.40
  6. Step 6: Final answer
    x = 94,147.33

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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.