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Finding the Fourth Proportional to 5,742,990.40, 8,613,902.40 and 1,956,418.60

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Solution

The fourth proportional to 5,742,990.40, 8,613,902.40 and 1,956,418.60 is: 2,934,429.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,742,990.40 : 8,613,902.40 = 1,956,418.60 : x
  2. Step 2: Convert to fraction form
    5,742,990.40/8,613,902.40 = 1,956,418.60/x
  3. Step 3: Cross multiply
    5,742,990.40x = 8,613,902.40 × 1,956,418.60
  4. Step 4: Simplify right side
    5,742,990.40x = 16,852,398,873,944.64
  5. Step 5: Solve for x
    x = 16,852,398,873,944.64/5,742,990.40
  6. Step 6: Final answer
    x = 2,934,429.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.