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Finding the Fourth Proportional to 80,784.78, 111,489.03 and 46,802.40

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Solution

The fourth proportional to 80,784.78, 111,489.03 and 46,802.40 is: 64,590.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,784.78 : 111,489.03 = 46,802.40 : x
  2. Step 2: Convert to fraction form
    80,784.78/111,489.03 = 46,802.40/x
  3. Step 3: Cross multiply
    80,784.78x = 111,489.03 × 46,802.40
  4. Step 4: Simplify right side
    80,784.78x = 5,217,954,177.67
  5. Step 5: Solve for x
    x = 5,217,954,177.67/80,784.78
  6. Step 6: Final answer
    x = 64,590.81

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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.