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Finding the Fourth Proportional to 71,394.45, 98,572.46 and 63,816.50

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Solution

The fourth proportional to 71,394.45, 98,572.46 and 63,816.50 is: 88,109.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,394.45 : 98,572.46 = 63,816.50 : x
  2. Step 2: Convert to fraction form
    71,394.45/98,572.46 = 63,816.50/x
  3. Step 3: Cross multiply
    71,394.45x = 98,572.46 × 63,816.50
  4. Step 4: Simplify right side
    71,394.45x = 6,290,548,581.65
  5. Step 5: Solve for x
    x = 6,290,548,581.65/71,394.45
  6. Step 6: Final answer
    x = 88,109.77

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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.