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Finding the Fourth Proportional to 91,719, 137,601.54 and 26,055

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Solution

The fourth proportional to 91,719, 137,601.54 and 26,055 is: 39,089.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,719 : 137,601.54 = 26,055 : x
  2. Step 2: Convert to fraction form
    91,719/137,601.54 = 26,055/x
  3. Step 3: Cross multiply
    91,719x = 137,601.54 × 26,055
  4. Step 4: Simplify right side
    91,719x = 3,585,208,124.70
  5. Step 5: Solve for x
    x = 3,585,208,124.70/91,719
  6. Step 6: Final answer
    x = 39,089.05

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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.