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Finding the Fourth Proportional to 1,169,539.56, 1,613,978.06 and 686,112.93

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Solution

The fourth proportional to 1,169,539.56, 1,613,978.06 and 686,112.93 is: 946,843.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,169,539.56 : 1,613,978.06 = 686,112.93 : x
  2. Step 2: Convert to fraction form
    1,169,539.56/1,613,978.06 = 686,112.93/x
  3. Step 3: Cross multiply
    1,169,539.56x = 1,613,978.06 × 686,112.93
  4. Step 4: Simplify right side
    1,169,539.56x = 1,107,371,212,271.75
  5. Step 5: Solve for x
    x = 1,107,371,212,271.75/1,169,539.56
  6. Step 6: Final answer
    x = 946,843.74

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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.