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Finding the Fourth Proportional to 91,707, 137,560.50 and 26,043

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Solution

The fourth proportional to 91,707, 137,560.50 and 26,043 is: 39,064.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,707 : 137,560.50 = 26,043 : x
  2. Step 2: Convert to fraction form
    91,707/137,560.50 = 26,043/x
  3. Step 3: Cross multiply
    91,707x = 137,560.50 × 26,043
  4. Step 4: Simplify right side
    91,707x = 3,582,488,101.50
  5. Step 5: Solve for x
    x = 3,582,488,101.50/91,707
  6. Step 6: Final answer
    x = 39,064.50

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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.