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Finding the Fourth Proportional to 53,803.76, 80,707.80 and 18,746.96

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Solution

The fourth proportional to 53,803.76, 80,707.80 and 18,746.96 is: 28,121.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,803.76 : 80,707.80 = 18,746.96 : x
  2. Step 2: Convert to fraction form
    53,803.76/80,707.80 = 18,746.96/x
  3. Step 3: Cross multiply
    53,803.76x = 80,707.80 × 18,746.96
  4. Step 4: Simplify right side
    53,803.76x = 1,513,025,898.29
  5. Step 5: Solve for x
    x = 1,513,025,898.29/53,803.76
  6. Step 6: Final answer
    x = 28,121.19

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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.