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Finding the Fourth Proportional to 11,657,068.70, 17,485,603.05 and 7,405,540.70

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Solution

The fourth proportional to 11,657,068.70, 17,485,603.05 and 7,405,540.70 is: 11,108,311.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,657,068.70 : 17,485,603.05 = 7,405,540.70 : x
  2. Step 2: Convert to fraction form
    11,657,068.70/17,485,603.05 = 7,405,540.70/x
  3. Step 3: Cross multiply
    11,657,068.70x = 17,485,603.05 × 7,405,540.70
  4. Step 4: Simplify right side
    11,657,068.70x = 129,490,345,050,819.14
  5. Step 5: Solve for x
    x = 129,490,345,050,819.14/11,657,068.70
  6. Step 6: Final answer
    x = 11,108,311.05

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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.