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Finding the Fourth Proportional to 606,783.66, 836,887.77 and 389,012.70

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Solution

The fourth proportional to 606,783.66, 836,887.77 and 389,012.70 is: 536,533.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,783.66 : 836,887.77 = 389,012.70 : x
  2. Step 2: Convert to fraction form
    606,783.66/836,887.77 = 389,012.70/x
  3. Step 3: Cross multiply
    606,783.66x = 836,887.77 × 389,012.70
  4. Step 4: Simplify right side
    606,783.66x = 325,559,971,004.68
  5. Step 5: Solve for x
    x = 325,559,971,004.68/606,783.66
  6. Step 6: Final answer
    x = 536,533.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.