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Finding the Fourth Proportional to 225,038.40, 337,346.40 and 84,891.20

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Solution

The fourth proportional to 225,038.40, 337,346.40 and 84,891.20 is: 127,257.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,038.40 : 337,346.40 = 84,891.20 : x
  2. Step 2: Convert to fraction form
    225,038.40/337,346.40 = 84,891.20/x
  3. Step 3: Cross multiply
    225,038.40x = 337,346.40 × 84,891.20
  4. Step 4: Simplify right side
    225,038.40x = 28,637,740,711.68
  5. Step 5: Solve for x
    x = 28,637,740,711.68/225,038.40
  6. Step 6: Final answer
    x = 127,257.13

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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.