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Finding the Fourth Proportional to 38,973,172.70, 54,652,021.30 and 38,973,172.70

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Solution

The fourth proportional to 38,973,172.70, 54,652,021.30 and 38,973,172.70 is: 54,652,021.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,973,172.70 : 54,652,021.30 = 38,973,172.70 : x
  2. Step 2: Convert to fraction form
    38,973,172.70/54,652,021.30 = 38,973,172.70/x
  3. Step 3: Cross multiply
    38,973,172.70x = 54,652,021.30 × 38,973,172.70
  4. Step 4: Simplify right side
    38,973,172.70x = 2,129,962,664,528,978.50
  5. Step 5: Solve for x
    x = 2,129,962,664,528,978.50/38,973,172.70
  6. Step 6: Final answer
    x = 54,652,021.30

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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.