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Finding the Fourth Proportional to 37,978,279.93, 52,409,736.61 and 20,574,500.66

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Solution

The fourth proportional to 37,978,279.93, 52,409,736.61 and 20,574,500.66 is: 28,392,653.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,978,279.93 : 52,409,736.61 = 20,574,500.66 : x
  2. Step 2: Convert to fraction form
    37,978,279.93/52,409,736.61 = 20,574,500.66/x
  3. Step 3: Cross multiply
    37,978,279.93x = 52,409,736.61 × 20,574,500.66
  4. Step 4: Simplify right side
    37,978,279.93x = 1,078,304,160,472,871.12
  5. Step 5: Solve for x
    x = 1,078,304,160,472,871.12/37,978,279.93
  6. Step 6: Final answer
    x = 28,392,653.97

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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.