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Finding the Fourth Proportional to 91,708.10, 137,562.15 and 91,708.10

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Solution

The fourth proportional to 91,708.10, 137,562.15 and 91,708.10 is: 137,562.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,708.10 : 137,562.15 = 91,708.10 : x
  2. Step 2: Convert to fraction form
    91,708.10/137,562.15 = 91,708.10/x
  3. Step 3: Cross multiply
    91,708.10x = 137,562.15 × 91,708.10
  4. Step 4: Simplify right side
    91,708.10x = 12,615,563,408.42
  5. Step 5: Solve for x
    x = 12,615,563,408.42/91,708.10
  6. Step 6: Final answer
    x = 137,562.15

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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.