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Finding the Fourth Proportional to 53,720.71, 80,582.63 and 25,643.71

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Solution

The fourth proportional to 53,720.71, 80,582.63 and 25,643.71 is: 38,466.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,720.71 : 80,582.63 = 25,643.71 : x
  2. Step 2: Convert to fraction form
    53,720.71/80,582.63 = 25,643.71/x
  3. Step 3: Cross multiply
    53,720.71x = 80,582.63 × 25,643.71
  4. Step 4: Simplify right side
    53,720.71x = 2,066,437,594.76
  5. Step 5: Solve for x
    x = 2,066,437,594.76/53,720.71
  6. Step 6: Final answer
    x = 38,466.31

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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.