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Finding the Fourth Proportional to 659,678.68, 909,887.22 and 605,406.16

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Solution

The fourth proportional to 659,678.68, 909,887.22 and 605,406.16 is: 835,029.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,678.68 : 909,887.22 = 605,406.16 : x
  2. Step 2: Convert to fraction form
    659,678.68/909,887.22 = 605,406.16/x
  3. Step 3: Cross multiply
    659,678.68x = 909,887.22 × 605,406.16
  4. Step 4: Simplify right side
    659,678.68x = 550,851,327,893.28
  5. Step 5: Solve for x
    x = 550,851,327,893.28/659,678.68
  6. Step 6: Final answer
    x = 835,029.76

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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.