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Finding the Fourth Proportional to 161,809.30, 242,541.15 and 61,930.90

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Solution

The fourth proportional to 161,809.30, 242,541.15 and 61,930.90 is: 92,830.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,809.30 : 242,541.15 = 61,930.90 : x
  2. Step 2: Convert to fraction form
    161,809.30/242,541.15 = 61,930.90/x
  3. Step 3: Cross multiply
    161,809.30x = 242,541.15 × 61,930.90
  4. Step 4: Simplify right side
    161,809.30x = 15,020,791,706.54
  5. Step 5: Solve for x
    x = 15,020,791,706.54/161,809.30
  6. Step 6: Final answer
    x = 92,830.21

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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.