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Finding the Fourth Proportional to 319,014.98, 478,615.89 and 94,381.44

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Solution

The fourth proportional to 319,014.98, 478,615.89 and 94,381.44 is: 141,599.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,014.98 : 478,615.89 = 94,381.44 : x
  2. Step 2: Convert to fraction form
    319,014.98/478,615.89 = 94,381.44/x
  3. Step 3: Cross multiply
    319,014.98x = 478,615.89 × 94,381.44
  4. Step 4: Simplify right side
    319,014.98x = 45,172,457,141.04
  5. Step 5: Solve for x
    x = 45,172,457,141.04/319,014.98
  6. Step 6: Final answer
    x = 141,599.80

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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.