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Finding the Fourth Proportional to 620,394.28, 929,999.94 and 199,374.28

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Solution

The fourth proportional to 620,394.28, 929,999.94 and 199,374.28 is: 298,871.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,394.28 : 929,999.94 = 199,374.28 : x
  2. Step 2: Convert to fraction form
    620,394.28/929,999.94 = 199,374.28/x
  3. Step 3: Cross multiply
    620,394.28x = 929,999.94 × 199,374.28
  4. Step 4: Simplify right side
    620,394.28x = 185,418,068,437.54
  5. Step 5: Solve for x
    x = 185,418,068,437.54/620,394.28
  6. Step 6: Final answer
    x = 298,871.34

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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.