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Finding the Fourth Proportional to 319,187.64, 440,475.96 and 173,993.40

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Solution

The fourth proportional to 319,187.64, 440,475.96 and 173,993.40 is: 240,109.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,187.64 : 440,475.96 = 173,993.40 : x
  2. Step 2: Convert to fraction form
    319,187.64/440,475.96 = 173,993.40/x
  3. Step 3: Cross multiply
    319,187.64x = 440,475.96 × 173,993.40
  4. Step 4: Simplify right side
    319,187.64x = 76,639,909,898.66
  5. Step 5: Solve for x
    x = 76,639,909,898.66/319,187.64
  6. Step 6: Final answer
    x = 240,109.27

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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.