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Finding the Fourth Proportional to 505,809.85, 758,697.13 and 126,733.80

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Solution

The fourth proportional to 505,809.85, 758,697.13 and 126,733.80 is: 190,096.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,809.85 : 758,697.13 = 126,733.80 : x
  2. Step 2: Convert to fraction form
    505,809.85/758,697.13 = 126,733.80/x
  3. Step 3: Cross multiply
    505,809.85x = 758,697.13 × 126,733.80
  4. Step 4: Simplify right side
    505,809.85x = 96,152,570,730.04
  5. Step 5: Solve for x
    x = 96,152,570,730.04/505,809.85
  6. Step 6: Final answer
    x = 190,096.28

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1.5x scale

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.