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Finding the Fourth Proportional to 621,000.77, 931,501.15 and 200,276.64

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Solution

The fourth proportional to 621,000.77, 931,501.15 and 200,276.64 is: 300,414.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,000.77 : 931,501.15 = 200,276.64 : x
  2. Step 2: Convert to fraction form
    621,000.77/931,501.15 = 200,276.64/x
  3. Step 3: Cross multiply
    621,000.77x = 931,501.15 × 200,276.64
  4. Step 4: Simplify right side
    621,000.77x = 186,557,919,977.44
  5. Step 5: Solve for x
    x = 186,557,919,977.44/621,000.77
  6. Step 6: Final answer
    x = 300,414.96

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Double scale
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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.