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Finding the Fourth Proportional to 65,714,887.80, 98,383,374.90 and 40,205,719.80

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Solution

The fourth proportional to 65,714,887.80, 98,383,374.90 and 40,205,719.80 is: 60,192,972.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,714,887.80 : 98,383,374.90 = 40,205,719.80 : x
  2. Step 2: Convert to fraction form
    65,714,887.80/98,383,374.90 = 40,205,719.80/x
  3. Step 3: Cross multiply
    65,714,887.80x = 98,383,374.90 × 40,205,719.80
  4. Step 4: Simplify right side
    65,714,887.80x = 3,955,574,404,207,753
  5. Step 5: Solve for x
    x = 3,955,574,404,207,753/65,714,887.80
  6. Step 6: Final answer
    x = 60,192,972.04

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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.