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Finding the Fourth Proportional to 319,364.36, 478,964.79 and 94,672.26

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Solution

The fourth proportional to 319,364.36, 478,964.79 and 94,672.26 is: 141,984.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,364.36 : 478,964.79 = 94,672.26 : x
  2. Step 2: Convert to fraction form
    319,364.36/478,964.79 = 94,672.26/x
  3. Step 3: Cross multiply
    319,364.36x = 478,964.79 × 94,672.26
  4. Step 4: Simplify right side
    319,364.36x = 45,344,679,129.73
  5. Step 5: Solve for x
    x = 45,344,679,129.73/319,364.36
  6. Step 6: Final answer
    x = 141,984.16

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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.