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Finding the Fourth Proportional to 151,000.81, 208,362.98 and 83,006.57

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Solution

The fourth proportional to 151,000.81, 208,362.98 and 83,006.57 is: 114,539.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,000.81 : 208,362.98 = 83,006.57 : x
  2. Step 2: Convert to fraction form
    151,000.81/208,362.98 = 83,006.57/x
  3. Step 3: Cross multiply
    151,000.81x = 208,362.98 × 83,006.57
  4. Step 4: Simplify right side
    151,000.81x = 17,295,497,013.20
  5. Step 5: Solve for x
    x = 17,295,497,013.20/151,000.81
  6. Step 6: Final answer
    x = 114,539.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.