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Finding the Fourth Proportional to 65,555.94, 98,334 and 28,091.72

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Solution

The fourth proportional to 65,555.94, 98,334 and 28,091.72 is: 42,137.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,555.94 : 98,334 = 28,091.72 : x
  2. Step 2: Convert to fraction form
    65,555.94/98,334 = 28,091.72/x
  3. Step 3: Cross multiply
    65,555.94x = 98,334 × 28,091.72
  4. Step 4: Simplify right side
    65,555.94x = 2,762,371,194.48
  5. Step 5: Solve for x
    x = 2,762,371,194.48/65,555.94
  6. Step 6: Final answer
    x = 42,137.62

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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.