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Finding the Fourth Proportional to 618,682.50, 853,652.25 and 364,061.70

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Solution

The fourth proportional to 618,682.50, 853,652.25 and 364,061.70 is: 502,328.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,682.50 : 853,652.25 = 364,061.70 : x
  2. Step 2: Convert to fraction form
    618,682.50/853,652.25 = 364,061.70/x
  3. Step 3: Cross multiply
    618,682.50x = 853,652.25 × 364,061.70
  4. Step 4: Simplify right side
    618,682.50x = 310,782,089,343.83
  5. Step 5: Solve for x
    x = 310,782,089,343.83/618,682.50
  6. Step 6: Final answer
    x = 502,328.88

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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.