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Finding the Fourth Proportional to 1,037,619.20, 1,553,971.20 and 703,385.60

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Solution

The fourth proportional to 1,037,619.20, 1,553,971.20 and 703,385.60 is: 1,053,412.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,037,619.20 : 1,553,971.20 = 703,385.60 : x
  2. Step 2: Convert to fraction form
    1,037,619.20/1,553,971.20 = 703,385.60/x
  3. Step 3: Cross multiply
    1,037,619.20x = 1,553,971.20 × 703,385.60
  4. Step 4: Simplify right side
    1,037,619.20x = 1,093,040,964,894.72
  5. Step 5: Solve for x
    x = 1,093,040,964,894.72/1,037,619.20
  6. Step 6: Final answer
    x = 1,053,412.43

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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.