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Finding the Fourth Proportional to 437,038,680.80, 655,558,021.20 and 437,038,680.80

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Solution

The fourth proportional to 437,038,680.80, 655,558,021.20 and 437,038,680.80 is: 655,558,021.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,038,680.80 : 655,558,021.20 = 437,038,680.80 : x
  2. Step 2: Convert to fraction form
    437,038,680.80/655,558,021.20 = 437,038,680.80/x
  3. Step 3: Cross multiply
    437,038,680.80x = 655,558,021.20 × 437,038,680.80
  4. Step 4: Simplify right side
    437,038,680.80x = 286,504,212,773,106,464
  5. Step 5: Solve for x
    x = 286,504,212,773,106,464/437,038,680.80
  6. Step 6: Final answer
    x = 655,558,021.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.