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Finding the Fourth Proportional to 67,818.80, 101,533.80 and 65,874.80

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Solution

The fourth proportional to 67,818.80, 101,533.80 and 65,874.80 is: 98,623.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,818.80 : 101,533.80 = 65,874.80 : x
  2. Step 2: Convert to fraction form
    67,818.80/101,533.80 = 65,874.80/x
  3. Step 3: Cross multiply
    67,818.80x = 101,533.80 × 65,874.80
  4. Step 4: Simplify right side
    67,818.80x = 6,688,518,768.24
  5. Step 5: Solve for x
    x = 6,688,518,768.24/67,818.80
  6. Step 6: Final answer
    x = 98,623.37

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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.