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Finding the Fourth Proportional to 3,418,287.80, 5,127,431.70 and 3,418,287.80

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Solution

The fourth proportional to 3,418,287.80, 5,127,431.70 and 3,418,287.80 is: 5,127,431.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,418,287.80 : 5,127,431.70 = 3,418,287.80 : x
  2. Step 2: Convert to fraction form
    3,418,287.80/5,127,431.70 = 3,418,287.80/x
  3. Step 3: Cross multiply
    3,418,287.80x = 5,127,431.70 × 3,418,287.80
  4. Step 4: Simplify right side
    3,418,287.80x = 17,527,037,225,443.26
  5. Step 5: Solve for x
    x = 17,527,037,225,443.26/3,418,287.80
  6. Step 6: Final answer
    x = 5,127,431.70

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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.