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Finding the Fourth Proportional to 38,972,956.70, 54,651,718.90 and 38,972,956.70

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Solution

The fourth proportional to 38,972,956.70, 54,651,718.90 and 38,972,956.70 is: 54,651,718.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,972,956.70 : 54,651,718.90 = 38,972,956.70 : x
  2. Step 2: Convert to fraction form
    38,972,956.70/54,651,718.90 = 38,972,956.70/x
  3. Step 3: Cross multiply
    38,972,956.70x = 54,651,718.90 × 38,972,956.70
  4. Step 4: Simplify right side
    38,972,956.70x = 2,129,939,074,270,271.75
  5. Step 5: Solve for x
    x = 2,129,939,074,270,271.75/38,972,956.70
  6. Step 6: Final answer
    x = 54,651,718.90

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.