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Finding the Fourth Proportional to 37,978,284.43, 52,409,742.82 and 20,574,505.16

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Solution

The fourth proportional to 37,978,284.43, 52,409,742.82 and 20,574,505.16 is: 28,392,660.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,978,284.43 : 52,409,742.82 = 20,574,505.16 : x
  2. Step 2: Convert to fraction form
    37,978,284.43/52,409,742.82 = 20,574,505.16/x
  3. Step 3: Cross multiply
    37,978,284.43x = 52,409,742.82 × 20,574,505.16
  4. Step 4: Simplify right side
    37,978,284.43x = 1,078,304,524,084,363
  5. Step 5: Solve for x
    x = 1,078,304,524,084,363/37,978,284.43
  6. Step 6: Final answer
    x = 28,392,660.18

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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.