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Finding the Fourth Proportional to 358,505.78, 538,090.98 and 181,137.45

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Solution

The fourth proportional to 358,505.78, 538,090.98 and 181,137.45 is: 271,874.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,505.78 : 538,090.98 = 181,137.45 : x
  2. Step 2: Convert to fraction form
    358,505.78/538,090.98 = 181,137.45/x
  3. Step 3: Cross multiply
    358,505.78x = 538,090.98 × 181,137.45
  4. Step 4: Simplify right side
    358,505.78x = 97,468,427,079.51
  5. Step 5: Solve for x
    x = 97,468,427,079.51/358,505.78
  6. Step 6: Final answer
    x = 271,874.07

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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.