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Finding the Fourth Proportional to 1,174,905.02, 1,621,363.28 and 665,606.18

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Solution

The fourth proportional to 1,174,905.02, 1,621,363.28 and 665,606.18 is: 918,533.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,174,905.02 : 1,621,363.28 = 665,606.18 : x
  2. Step 2: Convert to fraction form
    1,174,905.02/1,621,363.28 = 665,606.18/x
  3. Step 3: Cross multiply
    1,174,905.02x = 1,621,363.28 × 665,606.18
  4. Step 4: Simplify right side
    1,174,905.02x = 1,079,189,419,193.07
  5. Step 5: Solve for x
    x = 1,079,189,419,193.07/1,174,905.02
  6. Step 6: Final answer
    x = 918,533.33

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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.