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Finding the Fourth Proportional to 79,674.12, 119,182.86 and 65,474.28

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Solution

The fourth proportional to 79,674.12, 119,182.86 and 65,474.28 is: 97,941.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,674.12 : 119,182.86 = 65,474.28 : x
  2. Step 2: Convert to fraction form
    79,674.12/119,182.86 = 65,474.28/x
  3. Step 3: Cross multiply
    79,674.12x = 119,182.86 × 65,474.28
  4. Step 4: Simplify right side
    79,674.12x = 7,803,411,946.84
  5. Step 5: Solve for x
    x = 7,803,411,946.84/79,674.12
  6. Step 6: Final answer
    x = 97,941.61

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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.