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Finding the Fourth Proportional to 312,226.53, 430,875.77 and 168,989.64

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Solution

The fourth proportional to 312,226.53, 430,875.77 and 168,989.64 is: 233,207.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,226.53 : 430,875.77 = 168,989.64 : x
  2. Step 2: Convert to fraction form
    312,226.53/430,875.77 = 168,989.64/x
  3. Step 3: Cross multiply
    312,226.53x = 430,875.77 × 168,989.64
  4. Step 4: Simplify right side
    312,226.53x = 72,813,540,412.07
  5. Step 5: Solve for x
    x = 72,813,540,412.07/312,226.53
  6. Step 6: Final answer
    x = 233,207.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.