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Finding the Fourth Proportional to 1,242,559.62, 1,715,310 and 936,760.32

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Solution

The fourth proportional to 1,242,559.62, 1,715,310 and 936,760.32 is: 1,293,164.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242,559.62 : 1,715,310 = 936,760.32 : x
  2. Step 2: Convert to fraction form
    1,242,559.62/1,715,310 = 936,760.32/x
  3. Step 3: Cross multiply
    1,242,559.62x = 1,715,310 × 936,760.32
  4. Step 4: Simplify right side
    1,242,559.62x = 1,606,834,344,499.20
  5. Step 5: Solve for x
    x = 1,606,834,344,499.20/1,242,559.62
  6. Step 6: Final answer
    x = 1,293,164.79

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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.