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Finding the Fourth Proportional to 638,466.04, 957,699.06 and 217,745.56

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Solution

The fourth proportional to 638,466.04, 957,699.06 and 217,745.56 is: 326,618.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,466.04 : 957,699.06 = 217,745.56 : x
  2. Step 2: Convert to fraction form
    638,466.04/957,699.06 = 217,745.56/x
  3. Step 3: Cross multiply
    638,466.04x = 957,699.06 × 217,745.56
  4. Step 4: Simplify right side
    638,466.04x = 208,534,718,131.17
  5. Step 5: Solve for x
    x = 208,534,718,131.17/638,466.04
  6. Step 6: Final answer
    x = 326,618.34

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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.