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Finding the Fourth Proportional to 112,354.22, 168,531.80 and 28,114.16

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Solution

The fourth proportional to 112,354.22, 168,531.80 and 28,114.16 is: 42,171.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,354.22 : 168,531.80 = 28,114.16 : x
  2. Step 2: Convert to fraction form
    112,354.22/168,531.80 = 28,114.16/x
  3. Step 3: Cross multiply
    112,354.22x = 168,531.80 × 28,114.16
  4. Step 4: Simplify right side
    112,354.22x = 4,738,129,007.06
  5. Step 5: Solve for x
    x = 4,738,129,007.06/112,354.22
  6. Step 6: Final answer
    x = 42,171.35

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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.