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Finding the Fourth Proportional to 114,472.10, 171,811.06 and 61,209.60

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Solution

The fourth proportional to 114,472.10, 171,811.06 and 61,209.60 is: 91,869.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,472.10 : 171,811.06 = 61,209.60 : x
  2. Step 2: Convert to fraction form
    114,472.10/171,811.06 = 61,209.60/x
  3. Step 3: Cross multiply
    114,472.10x = 171,811.06 × 61,209.60
  4. Step 4: Simplify right side
    114,472.10x = 10,516,486,927.14
  5. Step 5: Solve for x
    x = 10,516,486,927.14/114,472.10
  6. Step 6: Final answer
    x = 91,869.43

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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.