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Finding the Fourth Proportional to 161,990.44, 242,987.82 and 56,812.48

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Solution

The fourth proportional to 161,990.44, 242,987.82 and 56,812.48 is: 85,219.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,990.44 : 242,987.82 = 56,812.48 : x
  2. Step 2: Convert to fraction form
    161,990.44/242,987.82 = 56,812.48/x
  3. Step 3: Cross multiply
    161,990.44x = 242,987.82 × 56,812.48
  4. Step 4: Simplify right side
    161,990.44x = 13,804,740,663.99
  5. Step 5: Solve for x
    x = 13,804,740,663.99/161,990.44
  6. Step 6: Final answer
    x = 85,219.48

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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.