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Finding the Fourth Proportional to 18,932,802.48, 28,399,202.51 and 4,555,871.78

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Solution

The fourth proportional to 18,932,802.48, 28,399,202.51 and 4,555,871.78 is: 6,833,807.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,932,802.48 : 28,399,202.51 = 4,555,871.78 : x
  2. Step 2: Convert to fraction form
    18,932,802.48/28,399,202.51 = 4,555,871.78/x
  3. Step 3: Cross multiply
    18,932,802.48x = 28,399,202.51 × 4,555,871.78
  4. Step 4: Simplify right side
    18,932,802.48x = 129,383,125,125,038.80
  5. Step 5: Solve for x
    x = 129,383,125,125,038.80/18,932,802.48
  6. Step 6: Final answer
    x = 6,833,807.37

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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.