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Finding the Fourth Proportional to 638,362.32, 957,683.52 and 189,118.31

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Solution

The fourth proportional to 638,362.32, 957,683.52 and 189,118.31 is: 283,718.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,362.32 : 957,683.52 = 189,118.31 : x
  2. Step 2: Convert to fraction form
    638,362.32/957,683.52 = 189,118.31/x
  3. Step 3: Cross multiply
    638,362.32x = 957,683.52 × 189,118.31
  4. Step 4: Simplify right side
    638,362.32x = 181,115,484,028.83
  5. Step 5: Solve for x
    x = 181,115,484,028.83/638,362.32
  6. Step 6: Final answer
    x = 283,718.95

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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.