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Finding the Fourth Proportional to 207,492.42, 311,265.76 and 74,387.54

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Solution

The fourth proportional to 207,492.42, 311,265.76 and 74,387.54 is: 111,591.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,492.42 : 311,265.76 = 74,387.54 : x
  2. Step 2: Convert to fraction form
    207,492.42/311,265.76 = 74,387.54/x
  3. Step 3: Cross multiply
    207,492.42x = 311,265.76 × 74,387.54
  4. Step 4: Simplify right side
    207,492.42x = 23,154,294,172.63
  5. Step 5: Solve for x
    x = 23,154,294,172.63/207,492.42
  6. Step 6: Final answer
    x = 111,591.04

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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.