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Finding the Fourth Proportional to 428,602.19, 591,351.44 and 337,676.45

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Solution

The fourth proportional to 428,602.19, 591,351.44 and 337,676.45 is: 465,899.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,602.19 : 591,351.44 = 337,676.45 : x
  2. Step 2: Convert to fraction form
    428,602.19/591,351.44 = 337,676.45/x
  3. Step 3: Cross multiply
    428,602.19x = 591,351.44 × 337,676.45
  4. Step 4: Simplify right side
    428,602.19x = 199,685,450,316.45
  5. Step 5: Solve for x
    x = 199,685,450,316.45/428,602.19
  6. Step 6: Final answer
    x = 465,899.28

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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.