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Finding the Fourth Proportional to 185,396.61, 277,880.72 and 85,347.03

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Solution

The fourth proportional to 185,396.61, 277,880.72 and 85,347.03 is: 127,921.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,396.61 : 277,880.72 = 85,347.03 : x
  2. Step 2: Convert to fraction form
    185,396.61/277,880.72 = 85,347.03/x
  3. Step 3: Cross multiply
    185,396.61x = 277,880.72 × 85,347.03
  4. Step 4: Simplify right side
    185,396.61x = 23,716,293,719.53
  5. Step 5: Solve for x
    x = 23,716,293,719.53/185,396.61
  6. Step 6: Final answer
    x = 127,921.94

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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.