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Finding the Fourth Proportional to 181,569.78, 272,354.67 and 56,920.50

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Solution

The fourth proportional to 181,569.78, 272,354.67 and 56,920.50 is: 85,380.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,569.78 : 272,354.67 = 56,920.50 : x
  2. Step 2: Convert to fraction form
    181,569.78/272,354.67 = 56,920.50/x
  3. Step 3: Cross multiply
    181,569.78x = 272,354.67 × 56,920.50
  4. Step 4: Simplify right side
    181,569.78x = 15,502,563,993.74
  5. Step 5: Solve for x
    x = 15,502,563,993.74/181,569.78
  6. Step 6: Final answer
    x = 85,380.75

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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.