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Finding the Fourth Proportional to 356,390.31, 534,665.25 and 119,726.53

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Solution

The fourth proportional to 356,390.31, 534,665.25 and 119,726.53 is: 179,616.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,390.31 : 534,665.25 = 119,726.53 : x
  2. Step 2: Convert to fraction form
    356,390.31/534,665.25 = 119,726.53/x
  3. Step 3: Cross multiply
    356,390.31x = 534,665.25 × 119,726.53
  4. Step 4: Simplify right side
    356,390.31x = 64,013,615,094.08
  5. Step 5: Solve for x
    x = 64,013,615,094.08/356,390.31
  6. Step 6: Final answer
    x = 179,616.60

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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.