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Finding the Fourth Proportional to 18,978,603.62, 26,190,598.77 and 10,276,776.20

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Solution

The fourth proportional to 18,978,603.62, 26,190,598.77 and 10,276,776.20 is: 14,182,019.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,978,603.62 : 26,190,598.77 = 10,276,776.20 : x
  2. Step 2: Convert to fraction form
    18,978,603.62/26,190,598.77 = 10,276,776.20/x
  3. Step 3: Cross multiply
    18,978,603.62x = 26,190,598.77 × 10,276,776.20
  4. Step 4: Simplify right side
    18,978,603.62x = 269,154,922,168,761.78
  5. Step 5: Solve for x
    x = 269,154,922,168,761.78/18,978,603.62
  6. Step 6: Final answer
    x = 14,182,019.27

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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.