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Finding the Fourth Proportional to 141,967.65, 212,905.40 and 47,172.37

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Solution

The fourth proportional to 141,967.65, 212,905.40 and 47,172.37 is: 70,743.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,967.65 : 212,905.40 = 47,172.37 : x
  2. Step 2: Convert to fraction form
    141,967.65/212,905.40 = 47,172.37/x
  3. Step 3: Cross multiply
    141,967.65x = 212,905.40 × 47,172.37
  4. Step 4: Simplify right side
    141,967.65x = 10,043,252,185.87
  5. Step 5: Solve for x
    x = 10,043,252,185.87/141,967.65
  6. Step 6: Final answer
    x = 70,743.25

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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.