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Finding the Fourth Proportional to 124,264.70, 186,212.72 and 91,271.42

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Solution

The fourth proportional to 124,264.70, 186,212.72 and 91,271.42 is: 136,771.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,264.70 : 186,212.72 = 91,271.42 : x
  2. Step 2: Convert to fraction form
    124,264.70/186,212.72 = 91,271.42/x
  3. Step 3: Cross multiply
    124,264.70x = 186,212.72 × 91,271.42
  4. Step 4: Simplify right side
    124,264.70x = 16,995,899,376.46
  5. Step 5: Solve for x
    x = 16,995,899,376.46/124,264.70
  6. Step 6: Final answer
    x = 136,771.74

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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.