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Finding the Fourth Proportional to 81,607,014.90, 114,400,986.30 and 81,607,014.90

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Solution

The fourth proportional to 81,607,014.90, 114,400,986.30 and 81,607,014.90 is: 114,400,986.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,607,014.90 : 114,400,986.30 = 81,607,014.90 : x
  2. Step 2: Convert to fraction form
    81,607,014.90/114,400,986.30 = 81,607,014.90/x
  3. Step 3: Cross multiply
    81,607,014.90x = 114,400,986.30 × 81,607,014.90
  4. Step 4: Simplify right side
    81,607,014.90x = 9,335,922,993,558,796
  5. Step 5: Solve for x
    x = 9,335,922,993,558,796/81,607,014.90
  6. Step 6: Final answer
    x = 114,400,986.30

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.