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Finding the Fourth Proportional to 194,471.20, 291,706.80 and 124,429.60

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Solution

The fourth proportional to 194,471.20, 291,706.80 and 124,429.60 is: 186,644.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,471.20 : 291,706.80 = 124,429.60 : x
  2. Step 2: Convert to fraction form
    194,471.20/291,706.80 = 124,429.60/x
  3. Step 3: Cross multiply
    194,471.20x = 291,706.80 × 124,429.60
  4. Step 4: Simplify right side
    194,471.20x = 36,296,960,441.28
  5. Step 5: Solve for x
    x = 36,296,960,441.28/194,471.20
  6. Step 6: Final answer
    x = 186,644.40

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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.