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Finding the Fourth Proportional to 638,362.46, 957,683.87 and 189,118.51

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Solution

The fourth proportional to 638,362.46, 957,683.87 and 189,118.51 is: 283,719.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,362.46 : 957,683.87 = 189,118.51 : x
  2. Step 2: Convert to fraction form
    638,362.46/957,683.87 = 189,118.51/x
  3. Step 3: Cross multiply
    638,362.46x = 957,683.87 × 189,118.51
  4. Step 4: Simplify right side
    638,362.46x = 181,115,740,811.42
  5. Step 5: Solve for x
    x = 181,115,740,811.42/638,362.46
  6. Step 6: Final answer
    x = 283,719.29

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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.