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Finding the Fourth Proportional to 70,889.85, 97,826.94 and 40,674.49

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Solution

The fourth proportional to 70,889.85, 97,826.94 and 40,674.49 is: 56,130.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,889.85 : 97,826.94 = 40,674.49 : x
  2. Step 2: Convert to fraction form
    70,889.85/97,826.94 = 40,674.49/x
  3. Step 3: Cross multiply
    70,889.85x = 97,826.94 × 40,674.49
  4. Step 4: Simplify right side
    70,889.85x = 3,979,060,892.76
  5. Step 5: Solve for x
    x = 3,979,060,892.76/70,889.85
  6. Step 6: Final answer
    x = 56,130.19

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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.