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Finding the Fourth Proportional to 69,060.94, 103,591.40 and 45,681.91

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Solution

The fourth proportional to 69,060.94, 103,591.40 and 45,681.91 is: 68,522.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,060.94 : 103,591.40 = 45,681.91 : x
  2. Step 2: Convert to fraction form
    69,060.94/103,591.40 = 45,681.91/x
  3. Step 3: Cross multiply
    69,060.94x = 103,591.40 × 45,681.91
  4. Step 4: Simplify right side
    69,060.94x = 4,732,252,866.80
  5. Step 5: Solve for x
    x = 4,732,252,866.80/69,060.94
  6. Step 6: Final answer
    x = 68,522.86

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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.