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Finding the Fourth Proportional to 638,056.84, 957,251.40 and 238,728.84

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Solution

The fourth proportional to 638,056.84, 957,251.40 and 238,728.84 is: 358,155.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,056.84 : 957,251.40 = 238,728.84 : x
  2. Step 2: Convert to fraction form
    638,056.84/957,251.40 = 238,728.84/x
  3. Step 3: Cross multiply
    638,056.84x = 957,251.40 × 238,728.84
  4. Step 4: Simplify right side
    638,056.84x = 228,523,516,310.38
  5. Step 5: Solve for x
    x = 228,523,516,310.38/638,056.84
  6. Step 6: Final answer
    x = 358,155.42

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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.