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Finding the Fourth Proportional to 620,764.96, 931,798.98 and 550,139.44

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Solution

The fourth proportional to 620,764.96, 931,798.98 and 550,139.44 is: 825,786.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,764.96 : 931,798.98 = 550,139.44 : x
  2. Step 2: Convert to fraction form
    620,764.96/931,798.98 = 550,139.44/x
  3. Step 3: Cross multiply
    620,764.96x = 931,798.98 × 550,139.44
  4. Step 4: Simplify right side
    620,764.96x = 512,619,363,015.43
  5. Step 5: Solve for x
    x = 512,619,363,015.43/620,764.96
  6. Step 6: Final answer
    x = 825,786.57

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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.