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Finding the Fourth Proportional to 190,908.60, 286,395.30 and 57,787.80

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Solution

The fourth proportional to 190,908.60, 286,395.30 and 57,787.80 is: 86,691.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,908.60 : 286,395.30 = 57,787.80 : x
  2. Step 2: Convert to fraction form
    190,908.60/286,395.30 = 57,787.80/x
  3. Step 3: Cross multiply
    190,908.60x = 286,395.30 × 57,787.80
  4. Step 4: Simplify right side
    190,908.60x = 16,550,154,317.34
  5. Step 5: Solve for x
    x = 16,550,154,317.34/190,908.60
  6. Step 6: Final answer
    x = 86,691.51

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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.