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Finding the Fourth Proportional to 620,677.44, 856,535.88 and 352,405.44

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Solution

The fourth proportional to 620,677.44, 856,535.88 and 352,405.44 is: 486,320.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,677.44 : 856,535.88 = 352,405.44 : x
  2. Step 2: Convert to fraction form
    620,677.44/856,535.88 = 352,405.44/x
  3. Step 3: Cross multiply
    620,677.44x = 856,535.88 × 352,405.44
  4. Step 4: Simplify right side
    620,677.44x = 301,847,903,667.19
  5. Step 5: Solve for x
    x = 301,847,903,667.19/620,677.44
  6. Step 6: Final answer
    x = 486,320.08

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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.