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Finding the Fourth Proportional to 656,189.80, 919,287.80 and 656,189.80

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Solution

The fourth proportional to 656,189.80, 919,287.80 and 656,189.80 is: 919,287.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,189.80 : 919,287.80 = 656,189.80 : x
  2. Step 2: Convert to fraction form
    656,189.80/919,287.80 = 656,189.80/x
  3. Step 3: Cross multiply
    656,189.80x = 919,287.80 × 656,189.80
  4. Step 4: Simplify right side
    656,189.80x = 603,227,277,624.44
  5. Step 5: Solve for x
    x = 603,227,277,624.44/656,189.80
  6. Step 6: Final answer
    x = 919,287.80

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1.5x scale

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.