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Finding the Fourth Proportional to 134,605.40, 201,891.90 and 55,711.40

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Solution

The fourth proportional to 134,605.40, 201,891.90 and 55,711.40 is: 83,560.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,605.40 : 201,891.90 = 55,711.40 : x
  2. Step 2: Convert to fraction form
    134,605.40/201,891.90 = 55,711.40/x
  3. Step 3: Cross multiply
    134,605.40x = 201,891.90 × 55,711.40
  4. Step 4: Simplify right side
    134,605.40x = 11,247,680,397.66
  5. Step 5: Solve for x
    x = 11,247,680,397.66/134,605.40
  6. Step 6: Final answer
    x = 83,560.40

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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.