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Finding the Fourth Proportional to 91,669, 137,526.54 and 26,005

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Solution

The fourth proportional to 91,669, 137,526.54 and 26,005 is: 39,014.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,669 : 137,526.54 = 26,005 : x
  2. Step 2: Convert to fraction form
    91,669/137,526.54 = 26,005/x
  3. Step 3: Cross multiply
    91,669x = 137,526.54 × 26,005
  4. Step 4: Simplify right side
    91,669x = 3,576,377,672.70
  5. Step 5: Solve for x
    x = 3,576,377,672.70/91,669
  6. Step 6: Final answer
    x = 39,014.04

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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.