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Finding the Fourth Proportional to 124,521, 186,781.62 and 40,351.80

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Solution

The fourth proportional to 124,521, 186,781.62 and 40,351.80 is: 60,527.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,521 : 186,781.62 = 40,351.80 : x
  2. Step 2: Convert to fraction form
    124,521/186,781.62 = 40,351.80/x
  3. Step 3: Cross multiply
    124,521x = 186,781.62 × 40,351.80
  4. Step 4: Simplify right side
    124,521x = 7,536,974,573.92
  5. Step 5: Solve for x
    x = 7,536,974,573.92/124,521
  6. Step 6: Final answer
    x = 60,527.74

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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.