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Finding the Fourth Proportional to 621,680.70, 932,521.05 and 201,258.30

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Solution

The fourth proportional to 621,680.70, 932,521.05 and 201,258.30 is: 301,887.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,680.70 : 932,521.05 = 201,258.30 : x
  2. Step 2: Convert to fraction form
    621,680.70/932,521.05 = 201,258.30/x
  3. Step 3: Cross multiply
    621,680.70x = 932,521.05 × 201,258.30
  4. Step 4: Simplify right side
    621,680.70x = 187,677,601,237.22
  5. Step 5: Solve for x
    x = 187,677,601,237.22/621,680.70
  6. Step 6: Final answer
    x = 301,887.45

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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.