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Finding the Fourth Proportional to 32,821,909.17, 45,295,978.19 and 18,885,381.78

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Solution

The fourth proportional to 32,821,909.17, 45,295,978.19 and 18,885,381.78 is: 26,062,830.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,821,909.17 : 45,295,978.19 = 18,885,381.78 : x
  2. Step 2: Convert to fraction form
    32,821,909.17/45,295,978.19 = 18,885,381.78/x
  3. Step 3: Cross multiply
    32,821,909.17x = 45,295,978.19 × 18,885,381.78
  4. Step 4: Simplify right side
    32,821,909.17x = 855,431,841,143,576.75
  5. Step 5: Solve for x
    x = 855,431,841,143,576.75/32,821,909.17
  6. Step 6: Final answer
    x = 26,062,830.06

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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.