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Finding the Fourth Proportional to 393,118.74, 589,564.08 and 153,179.12

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Solution

The fourth proportional to 393,118.74, 589,564.08 and 153,179.12 is: 229,724.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,118.74 : 589,564.08 = 153,179.12 : x
  2. Step 2: Convert to fraction form
    393,118.74/589,564.08 = 153,179.12/x
  3. Step 3: Cross multiply
    393,118.74x = 589,564.08 × 153,179.12
  4. Step 4: Simplify right side
    393,118.74x = 90,308,906,958.01
  5. Step 5: Solve for x
    x = 90,308,906,958.01/393,118.74
  6. Step 6: Final answer
    x = 229,724.25

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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.