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Finding the Fourth Proportional to 11,591,978.90, 17,387,968.35 and 9,716,407.70

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Solution

The fourth proportional to 11,591,978.90, 17,387,968.35 and 9,716,407.70 is: 14,574,611.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,591,978.90 : 17,387,968.35 = 9,716,407.70 : x
  2. Step 2: Convert to fraction form
    11,591,978.90/17,387,968.35 = 9,716,407.70/x
  3. Step 3: Cross multiply
    11,591,978.90x = 17,387,968.35 × 9,716,407.70
  4. Step 4: Simplify right side
    11,591,978.90x = 168,948,589,563,296.28
  5. Step 5: Solve for x
    x = 168,948,589,563,296.28/11,591,978.90
  6. Step 6: Final answer
    x = 14,574,611.55

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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.