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Finding the Fourth Proportional to 238,374.87, 328,986.46 and 137,772.87

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Solution

The fourth proportional to 238,374.87, 328,986.46 and 137,772.87 is: 190,143.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,374.87 : 328,986.46 = 137,772.87 : x
  2. Step 2: Convert to fraction form
    238,374.87/328,986.46 = 137,772.87/x
  3. Step 3: Cross multiply
    238,374.87x = 328,986.46 × 137,772.87
  4. Step 4: Simplify right side
    238,374.87x = 45,325,408,785.34
  5. Step 5: Solve for x
    x = 45,325,408,785.34/238,374.87
  6. Step 6: Final answer
    x = 190,143.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.