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Finding the Fourth Proportional to 413,935.20, 620,749.20 and 164,565.60

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Solution

The fourth proportional to 413,935.20, 620,749.20 and 164,565.60 is: 246,787.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,935.20 : 620,749.20 = 164,565.60 : x
  2. Step 2: Convert to fraction form
    413,935.20/620,749.20 = 164,565.60/x
  3. Step 3: Cross multiply
    413,935.20x = 620,749.20 × 164,565.60
  4. Step 4: Simplify right side
    413,935.20x = 102,153,964,547.52
  5. Step 5: Solve for x
    x = 102,153,964,547.52/413,935.20
  6. Step 6: Final answer
    x = 246,787.33

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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.