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Finding the Fourth Proportional to 319,878.04, 479,802.48 and 106,630.96

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Solution

The fourth proportional to 319,878.04, 479,802.48 and 106,630.96 is: 159,941.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,878.04 : 479,802.48 = 106,630.96 : x
  2. Step 2: Convert to fraction form
    319,878.04/479,802.48 = 106,630.96/x
  3. Step 3: Cross multiply
    319,878.04x = 479,802.48 × 106,630.96
  4. Step 4: Simplify right side
    319,878.04x = 51,161,799,052.78
  5. Step 5: Solve for x
    x = 51,161,799,052.78/319,878.04
  6. Step 6: Final answer
    x = 159,941.58

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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.