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Finding the Fourth Proportional to 620,603.58, 930,905.42 and 199,879.46

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Solution

The fourth proportional to 620,603.58, 930,905.42 and 199,879.46 is: 299,819.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,603.58 : 930,905.42 = 199,879.46 : x
  2. Step 2: Convert to fraction form
    620,603.58/930,905.42 = 199,879.46/x
  3. Step 3: Cross multiply
    620,603.58x = 930,905.42 × 199,879.46
  4. Step 4: Simplify right side
    620,603.58x = 186,068,867,006.75
  5. Step 5: Solve for x
    x = 186,068,867,006.75/620,603.58
  6. Step 6: Final answer
    x = 299,819.20

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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.