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Finding the Fourth Proportional to 638,133.90, 957,200.85 and 354,698.70

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Solution

The fourth proportional to 638,133.90, 957,200.85 and 354,698.70 is: 532,048.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,133.90 : 957,200.85 = 354,698.70 : x
  2. Step 2: Convert to fraction form
    638,133.90/957,200.85 = 354,698.70/x
  3. Step 3: Cross multiply
    638,133.90x = 957,200.85 × 354,698.70
  4. Step 4: Simplify right side
    638,133.90x = 339,517,897,133.90
  5. Step 5: Solve for x
    x = 339,517,897,133.90/638,133.90
  6. Step 6: Final answer
    x = 532,048.05

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Similar ratio
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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.