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Finding the Fourth Proportional to 65,404.48, 98,070.88 and 30,324.80

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Solution

The fourth proportional to 65,404.48, 98,070.88 and 30,324.80 is: 45,470.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,404.48 : 98,070.88 = 30,324.80 : x
  2. Step 2: Convert to fraction form
    65,404.48/98,070.88 = 30,324.80/x
  3. Step 3: Cross multiply
    65,404.48x = 98,070.88 × 30,324.80
  4. Step 4: Simplify right side
    65,404.48x = 2,973,979,821.82
  5. Step 5: Solve for x
    x = 2,973,979,821.82/65,404.48
  6. Step 6: Final answer
    x = 45,470.58

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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.