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Finding the Fourth Proportional to 123,760.41, 170,760.08 and 70,045.42

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Solution

The fourth proportional to 123,760.41, 170,760.08 and 70,045.42 is: 96,646.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,760.41 : 170,760.08 = 70,045.42 : x
  2. Step 2: Convert to fraction form
    123,760.41/170,760.08 = 70,045.42/x
  3. Step 3: Cross multiply
    123,760.41x = 170,760.08 × 70,045.42
  4. Step 4: Simplify right side
    123,760.41x = 11,960,961,522.83
  5. Step 5: Solve for x
    x = 11,960,961,522.83/123,760.41
  6. Step 6: Final answer
    x = 96,646.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.