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Finding the Fourth Proportional to 201,328.19, 301,994.10 and 61,086.81

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Solution

The fourth proportional to 201,328.19, 301,994.10 and 61,086.81 is: 91,630.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,328.19 : 301,994.10 = 61,086.81 : x
  2. Step 2: Convert to fraction form
    201,328.19/301,994.10 = 61,086.81/x
  3. Step 3: Cross multiply
    201,328.19x = 301,994.10 × 61,086.81
  4. Step 4: Simplify right side
    201,328.19x = 18,447,856,207.82
  5. Step 5: Solve for x
    x = 18,447,856,207.82/201,328.19
  6. Step 6: Final answer
    x = 91,630.77

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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.