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Finding the Fourth Proportional to 71,604.81, 98,841.20 and 61,492.64

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Solution

The fourth proportional to 71,604.81, 98,841.20 and 61,492.64 is: 84,882.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,604.81 : 98,841.20 = 61,492.64 : x
  2. Step 2: Convert to fraction form
    71,604.81/98,841.20 = 61,492.64/x
  3. Step 3: Cross multiply
    71,604.81x = 98,841.20 × 61,492.64
  4. Step 4: Simplify right side
    71,604.81x = 6,078,005,527.10
  5. Step 5: Solve for x
    x = 6,078,005,527.10/71,604.81
  6. Step 6: Final answer
    x = 84,882.64

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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.