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Finding the Fourth Proportional to 359,181.99, 538,901.78 and 153,930.51

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Solution

The fourth proportional to 359,181.99, 538,901.78 and 153,930.51 is: 230,950.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,181.99 : 538,901.78 = 153,930.51 : x
  2. Step 2: Convert to fraction form
    359,181.99/538,901.78 = 153,930.51/x
  3. Step 3: Cross multiply
    359,181.99x = 538,901.78 × 153,930.51
  4. Step 4: Simplify right side
    359,181.99x = 82,953,425,065.66
  5. Step 5: Solve for x
    x = 82,953,425,065.66/359,181.99
  6. Step 6: Final answer
    x = 230,950.96

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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.