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Finding the Fourth Proportional to 1,174,899.52, 1,621,355.70 and 665,600.68

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Solution

The fourth proportional to 1,174,899.52, 1,621,355.70 and 665,600.68 is: 918,525.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,174,899.52 : 1,621,355.70 = 665,600.68 : x
  2. Step 2: Convert to fraction form
    1,174,899.52/1,621,355.70 = 665,600.68/x
  3. Step 3: Cross multiply
    1,174,899.52x = 1,621,355.70 × 665,600.68
  4. Step 4: Simplify right side
    1,174,899.52x = 1,079,175,456,441.88
  5. Step 5: Solve for x
    x = 1,079,175,456,441.88/1,174,899.52
  6. Step 6: Final answer
    x = 918,525.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.