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Finding the Fourth Proportional to 212,790.60, 319,258.80 and 94,546.80

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Solution

The fourth proportional to 212,790.60, 319,258.80 and 94,546.80 is: 141,852.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,790.60 : 319,258.80 = 94,546.80 : x
  2. Step 2: Convert to fraction form
    212,790.60/319,258.80 = 94,546.80/x
  3. Step 3: Cross multiply
    212,790.60x = 319,258.80 × 94,546.80
  4. Step 4: Simplify right side
    212,790.60x = 30,184,897,911.84
  5. Step 5: Solve for x
    x = 30,184,897,911.84/212,790.60
  6. Step 6: Final answer
    x = 141,852.59

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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.