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Finding the Fourth Proportional to 193,181.52, 289,852.08 and 85,055.40

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Solution

The fourth proportional to 193,181.52, 289,852.08 and 85,055.40 is: 127,618.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,181.52 : 289,852.08 = 85,055.40 : x
  2. Step 2: Convert to fraction form
    193,181.52/289,852.08 = 85,055.40/x
  3. Step 3: Cross multiply
    193,181.52x = 289,852.08 × 85,055.40
  4. Step 4: Simplify right side
    193,181.52x = 24,653,484,605.23
  5. Step 5: Solve for x
    x = 24,653,484,605.23/193,181.52
  6. Step 6: Final answer
    x = 127,618.23

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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.