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Finding the Fourth Proportional to 359,357.11, 538,918.99 and 119,406.59

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Solution

The fourth proportional to 359,357.11, 538,918.99 and 119,406.59 is: 179,071.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,357.11 : 538,918.99 = 119,406.59 : x
  2. Step 2: Convert to fraction form
    359,357.11/538,918.99 = 119,406.59/x
  3. Step 3: Cross multiply
    359,357.11x = 538,918.99 × 119,406.59
  4. Step 4: Simplify right side
    359,357.11x = 64,350,477,909.98
  5. Step 5: Solve for x
    x = 64,350,477,909.98/359,357.11
  6. Step 6: Final answer
    x = 179,071.11

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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.