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Finding the Fourth Proportional to 359,136.36, 538,587.31 and 119,185.81

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Solution

The fourth proportional to 359,136.36, 538,587.31 and 119,185.81 is: 178,739.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,136.36 : 538,587.31 = 119,185.81 : x
  2. Step 2: Convert to fraction form
    359,136.36/538,587.31 = 119,185.81/x
  3. Step 3: Cross multiply
    359,136.36x = 538,587.31 × 119,185.81
  4. Step 4: Simplify right side
    359,136.36x = 64,191,964,798.07
  5. Step 5: Solve for x
    x = 64,191,964,798.07/359,136.36
  6. Step 6: Final answer
    x = 178,739.81

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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.