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Finding the Fourth Proportional to 620,591,704.80, 930,887,557.20 and 275,178,674.40

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Solution

The fourth proportional to 620,591,704.80, 930,887,557.20 and 275,178,674.40 is: 412,768,011.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,591,704.80 : 930,887,557.20 = 275,178,674.40 : x
  2. Step 2: Convert to fraction form
    620,591,704.80/930,887,557.20 = 275,178,674.40/x
  3. Step 3: Cross multiply
    620,591,704.80x = 930,887,557.20 × 275,178,674.40
  4. Step 4: Simplify right side
    620,591,704.80x = 256,160,404,005,750,176
  5. Step 5: Solve for x
    x = 256,160,404,005,750,176/620,591,704.80
  6. Step 6: Final answer
    x = 412,768,011.60

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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.