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Finding the Fourth Proportional to 620,676.36, 856,570.05 and 467,444.25

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Solution

The fourth proportional to 620,676.36, 856,570.05 and 467,444.25 is: 645,100.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,676.36 : 856,570.05 = 467,444.25 : x
  2. Step 2: Convert to fraction form
    620,676.36/856,570.05 = 467,444.25/x
  3. Step 3: Cross multiply
    620,676.36x = 856,570.05 × 467,444.25
  4. Step 4: Simplify right side
    620,676.36x = 400,398,744,594.71
  5. Step 5: Solve for x
    x = 400,398,744,594.71/620,676.36
  6. Step 6: Final answer
    x = 645,100.68

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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.