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Finding the Fourth Proportional to 685,811.00, 946,426.78 and 379,892.08

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Solution

The fourth proportional to 685,811.00, 946,426.78 and 379,892.08 is: 524,255.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,811.00 : 946,426.78 = 379,892.08 : x
  2. Step 2: Convert to fraction form
    685,811.00/946,426.78 = 379,892.08/x
  3. Step 3: Cross multiply
    685,811.00x = 946,426.78 × 379,892.08
  4. Step 4: Simplify right side
    685,811.00x = 359,540,034,356.15
  5. Step 5: Solve for x
    x = 359,540,034,356.15/685,811.00
  6. Step 6: Final answer
    x = 524,255.27

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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.