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Finding the Fourth Proportional to 1,714,839.96, 2,366,308.64 and 989,921.22

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Solution

The fourth proportional to 1,714,839.96, 2,366,308.64 and 989,921.22 is: 1,365,992.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,714,839.96 : 2,366,308.64 = 989,921.22 : x
  2. Step 2: Convert to fraction form
    1,714,839.96/2,366,308.64 = 989,921.22/x
  3. Step 3: Cross multiply
    1,714,839.96x = 2,366,308.64 × 989,921.22
  4. Step 4: Simplify right side
    1,714,839.96x = 2,342,459,143,803.91
  5. Step 5: Solve for x
    x = 2,342,459,143,803.91/1,714,839.96
  6. Step 6: Final answer
    x = 1,365,992.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.