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Finding the Fourth Proportional to 124,424.80, 186,637.20 and 73,905.10

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Solution

The fourth proportional to 124,424.80, 186,637.20 and 73,905.10 is: 110,857.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,424.80 : 186,637.20 = 73,905.10 : x
  2. Step 2: Convert to fraction form
    124,424.80/186,637.20 = 73,905.10/x
  3. Step 3: Cross multiply
    124,424.80x = 186,637.20 × 73,905.10
  4. Step 4: Simplify right side
    124,424.80x = 13,793,440,929.72
  5. Step 5: Solve for x
    x = 13,793,440,929.72/124,424.80
  6. Step 6: Final answer
    x = 110,857.65

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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.