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Finding the Fourth Proportional to 99,583.65, 137,423.70 and 54,262.01

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Solution

The fourth proportional to 99,583.65, 137,423.70 and 54,262.01 is: 74,880.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,583.65 : 137,423.70 = 54,262.01 : x
  2. Step 2: Convert to fraction form
    99,583.65/137,423.70 = 54,262.01/x
  3. Step 3: Cross multiply
    99,583.65x = 137,423.70 × 54,262.01
  4. Step 4: Simplify right side
    99,583.65x = 7,456,886,527.20
  5. Step 5: Solve for x
    x = 7,456,886,527.20/99,583.65
  6. Step 6: Final answer
    x = 74,880.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.