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Finding the Fourth Proportional to 319,615.53, 441,144.92 and 183,728.31

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Solution

The fourth proportional to 319,615.53, 441,144.92 and 183,728.31 is: 253,588.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,615.53 : 441,144.92 = 183,728.31 : x
  2. Step 2: Convert to fraction form
    319,615.53/441,144.92 = 183,728.31/x
  3. Step 3: Cross multiply
    319,615.53x = 441,144.92 × 183,728.31
  4. Step 4: Simplify right side
    319,615.53x = 81,050,809,698.04
  5. Step 5: Solve for x
    x = 81,050,809,698.04/319,615.53
  6. Step 6: Final answer
    x = 253,588.46

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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.