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Finding the Fourth Proportional to 146,990.63, 220,488.51 and 41,812.40

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Solution

The fourth proportional to 146,990.63, 220,488.51 and 41,812.40 is: 62,719.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,990.63 : 220,488.51 = 41,812.40 : x
  2. Step 2: Convert to fraction form
    146,990.63/220,488.51 = 41,812.40/x
  3. Step 3: Cross multiply
    146,990.63x = 220,488.51 × 41,812.40
  4. Step 4: Simplify right side
    146,990.63x = 9,219,153,775.52
  5. Step 5: Solve for x
    x = 9,219,153,775.52/146,990.63
  6. Step 6: Final answer
    x = 62,719.33

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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.