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Finding the Fourth Proportional to 65,511.68, 98,290.56 and 28,570.88

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Solution

The fourth proportional to 65,511.68, 98,290.56 and 28,570.88 is: 42,866.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,511.68 : 98,290.56 = 28,570.88 : x
  2. Step 2: Convert to fraction form
    65,511.68/98,290.56 = 28,570.88/x
  3. Step 3: Cross multiply
    65,511.68x = 98,290.56 × 28,570.88
  4. Step 4: Simplify right side
    65,511.68x = 2,808,247,794.89
  5. Step 5: Solve for x
    x = 2,808,247,794.89/65,511.68
  6. Step 6: Final answer
    x = 42,866.37

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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.