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Finding the Fourth Proportional to 94,697.64, 142,068.70 and 28,138.28

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Solution

The fourth proportional to 94,697.64, 142,068.70 and 28,138.28 is: 42,214.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,697.64 : 142,068.70 = 28,138.28 : x
  2. Step 2: Convert to fraction form
    94,697.64/142,068.70 = 28,138.28/x
  3. Step 3: Cross multiply
    94,697.64x = 142,068.70 × 28,138.28
  4. Step 4: Simplify right side
    94,697.64x = 3,997,568,859.84
  5. Step 5: Solve for x
    x = 3,997,568,859.84/94,697.64
  6. Step 6: Final answer
    x = 42,214.03

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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.