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Finding the Fourth Proportional to 638,150.90, 957,226.35 and 217,901.30

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Solution

The fourth proportional to 638,150.90, 957,226.35 and 217,901.30 is: 326,851.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,150.90 : 957,226.35 = 217,901.30 : x
  2. Step 2: Convert to fraction form
    638,150.90/957,226.35 = 217,901.30/x
  3. Step 3: Cross multiply
    638,150.90x = 957,226.35 × 217,901.30
  4. Step 4: Simplify right side
    638,150.90x = 208,580,866,059.26
  5. Step 5: Solve for x
    x = 208,580,866,059.26/638,150.90
  6. Step 6: Final answer
    x = 326,851.95

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Half scale
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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.