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Finding the Fourth Proportional to 124,752.72, 186,971.40 and 54,548.40

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Solution

The fourth proportional to 124,752.72, 186,971.40 and 54,548.40 is: 81,753.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,752.72 : 186,971.40 = 54,548.40 : x
  2. Step 2: Convert to fraction form
    124,752.72/186,971.40 = 54,548.40/x
  3. Step 3: Cross multiply
    124,752.72x = 186,971.40 × 54,548.40
  4. Step 4: Simplify right side
    124,752.72x = 10,198,990,715.76
  5. Step 5: Solve for x
    x = 10,198,990,715.76/124,752.72
  6. Step 6: Final answer
    x = 81,753.65

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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.