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Finding the Fourth Proportional to 212,632.40, 319,094.40 and 94,388.60

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Solution

The fourth proportional to 212,632.40, 319,094.40 and 94,388.60 is: 141,647.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,632.40 : 319,094.40 = 94,388.60 : x
  2. Step 2: Convert to fraction form
    212,632.40/319,094.40 = 94,388.60/x
  3. Step 3: Cross multiply
    212,632.40x = 319,094.40 × 94,388.60
  4. Step 4: Simplify right side
    212,632.40x = 30,118,873,683.84
  5. Step 5: Solve for x
    x = 30,118,873,683.84/212,632.40
  6. Step 6: Final answer
    x = 141,647.62

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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.