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Finding the Fourth Proportional to 199,538.64, 275,492.88 and 154,137.60

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Solution

The fourth proportional to 199,538.64, 275,492.88 and 154,137.60 is: 212,809.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,538.64 : 275,492.88 = 154,137.60 : x
  2. Step 2: Convert to fraction form
    199,538.64/275,492.88 = 154,137.60/x
  3. Step 3: Cross multiply
    199,538.64x = 275,492.88 × 154,137.60
  4. Step 4: Simplify right side
    199,538.64x = 42,463,811,340.29
  5. Step 5: Solve for x
    x = 42,463,811,340.29/199,538.64
  6. Step 6: Final answer
    x = 212,809.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.