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Finding the Fourth Proportional to 65,776.55, 98,619.06 and 28,325.39

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Solution

The fourth proportional to 65,776.55, 98,619.06 and 28,325.39 is: 42,468.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,776.55 : 98,619.06 = 28,325.39 : x
  2. Step 2: Convert to fraction form
    65,776.55/98,619.06 = 28,325.39/x
  3. Step 3: Cross multiply
    65,776.55x = 98,619.06 × 28,325.39
  4. Step 4: Simplify right side
    65,776.55x = 2,793,423,335.93
  5. Step 5: Solve for x
    x = 2,793,423,335.93/65,776.55
  6. Step 6: Final answer
    x = 42,468.38

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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.