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Finding the Fourth Proportional to 610,991.66, 916,532.45 and 161,709.48

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Solution

The fourth proportional to 610,991.66, 916,532.45 and 161,709.48 is: 242,576.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,991.66 : 916,532.45 = 161,709.48 : x
  2. Step 2: Convert to fraction form
    610,991.66/916,532.45 = 161,709.48/x
  3. Step 3: Cross multiply
    610,991.66x = 916,532.45 × 161,709.48
  4. Step 4: Simplify right side
    610,991.66x = 148,211,985,084.08
  5. Step 5: Solve for x
    x = 148,211,985,084.08/610,991.66
  6. Step 6: Final answer
    x = 242,576.12

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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.