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Finding the Fourth Proportional to 65,588, 98,398.61 and 18,840.88

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Solution

The fourth proportional to 65,588, 98,398.61 and 18,840.88 is: 28,266.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,588 : 98,398.61 = 18,840.88 : x
  2. Step 2: Convert to fraction form
    65,588/98,398.61 = 18,840.88/x
  3. Step 3: Cross multiply
    65,588x = 98,398.61 × 18,840.88
  4. Step 4: Simplify right side
    65,588x = 1,853,915,816.98
  5. Step 5: Solve for x
    x = 1,853,915,816.98/65,588
  6. Step 6: Final answer
    x = 28,266.08

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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.