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Finding the Fourth Proportional to 11,591,985.90, 17,387,978.85 and 9,716,414.70

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Solution

The fourth proportional to 11,591,985.90, 17,387,978.85 and 9,716,414.70 is: 14,574,622.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,591,985.90 : 17,387,978.85 = 9,716,414.70 : x
  2. Step 2: Convert to fraction form
    11,591,985.90/17,387,978.85 = 9,716,414.70/x
  3. Step 3: Cross multiply
    11,591,985.90x = 17,387,978.85 × 9,716,414.70
  4. Step 4: Simplify right side
    11,591,985.90x = 168,948,813,301,429.09
  5. Step 5: Solve for x
    x = 168,948,813,301,429.09/11,591,985.90
  6. Step 6: Final answer
    x = 14,574,622.05

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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.