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Finding the Fourth Proportional to 479,763.48, 719,519.60 and 142,713.38

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Solution

The fourth proportional to 479,763.48, 719,519.60 and 142,713.38 is: 214,032.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,763.48 : 719,519.60 = 142,713.38 : x
  2. Step 2: Convert to fraction form
    479,763.48/719,519.60 = 142,713.38/x
  3. Step 3: Cross multiply
    479,763.48x = 719,519.60 × 142,713.38
  4. Step 4: Simplify right side
    479,763.48x = 102,685,074,092.25
  5. Step 5: Solve for x
    x = 102,685,074,092.25/479,763.48
  6. Step 6: Final answer
    x = 214,032.70

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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.