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Finding the Fourth Proportional to 319,881.12, 441,424.80 and 183,910.56

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Solution

The fourth proportional to 319,881.12, 441,424.80 and 183,910.56 is: 253,790.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,881.12 : 441,424.80 = 183,910.56 : x
  2. Step 2: Convert to fraction form
    319,881.12/441,424.80 = 183,910.56/x
  3. Step 3: Cross multiply
    319,881.12x = 441,424.80 × 183,910.56
  4. Step 4: Simplify right side
    319,881.12x = 81,182,682,165.89
  5. Step 5: Solve for x
    x = 81,182,682,165.89/319,881.12
  6. Step 6: Final answer
    x = 253,790.16

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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.