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Finding the Fourth Proportional to 53,218.60, 79,946.70 and 44,470.60

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Solution

The fourth proportional to 53,218.60, 79,946.70 and 44,470.60 is: 66,805.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,218.60 : 79,946.70 = 44,470.60 : x
  2. Step 2: Convert to fraction form
    53,218.60/79,946.70 = 44,470.60/x
  3. Step 3: Cross multiply
    53,218.60x = 79,946.70 × 44,470.60
  4. Step 4: Simplify right side
    53,218.60x = 3,555,277,717.02
  5. Step 5: Solve for x
    x = 3,555,277,717.02/53,218.60
  6. Step 6: Final answer
    x = 66,805.17

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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.