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Finding the Fourth Proportional to 65,712.20, 98,714.10 and 63,962.60

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Solution

The fourth proportional to 65,712.20, 98,714.10 and 63,962.60 is: 96,085.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,712.20 : 98,714.10 = 63,962.60 : x
  2. Step 2: Convert to fraction form
    65,712.20/98,714.10 = 63,962.60/x
  3. Step 3: Cross multiply
    65,712.20x = 98,714.10 × 63,962.60
  4. Step 4: Simplify right side
    65,712.20x = 6,314,010,492.66
  5. Step 5: Solve for x
    x = 6,314,010,492.66/65,712.20
  6. Step 6: Final answer
    x = 96,085.82

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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.