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Finding the Fourth Proportional to 319,185.84, 440,473.52 and 173,991.60

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Solution

The fourth proportional to 319,185.84, 440,473.52 and 173,991.60 is: 240,106.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,185.84 : 440,473.52 = 173,991.60 : x
  2. Step 2: Convert to fraction form
    319,185.84/440,473.52 = 173,991.60/x
  3. Step 3: Cross multiply
    319,185.84x = 440,473.52 × 173,991.60
  4. Step 4: Simplify right side
    319,185.84x = 76,638,692,502.43
  5. Step 5: Solve for x
    x = 76,638,692,502.43/319,185.84
  6. Step 6: Final answer
    x = 240,106.81

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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.