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Finding the Fourth Proportional to 638,133.80, 957,200.70 and 622,387.40

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Solution

The fourth proportional to 638,133.80, 957,200.70 and 622,387.40 is: 933,581.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,133.80 : 957,200.70 = 622,387.40 : x
  2. Step 2: Convert to fraction form
    638,133.80/957,200.70 = 622,387.40/x
  3. Step 3: Cross multiply
    638,133.80x = 957,200.70 × 622,387.40
  4. Step 4: Simplify right side
    638,133.80x = 595,749,654,951.18
  5. Step 5: Solve for x
    x = 595,749,654,951.18/638,133.80
  6. Step 6: Final answer
    x = 933,581.10

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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.