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Finding the Fourth Proportional to 17,968,708.80, 26,956,562.40 and 5,189,630.40

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Solution

The fourth proportional to 17,968,708.80, 26,956,562.40 and 5,189,630.40 is: 7,785,456.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,968,708.80 : 26,956,562.40 = 5,189,630.40 : x
  2. Step 2: Convert to fraction form
    17,968,708.80/26,956,562.40 = 5,189,630.40/x
  3. Step 3: Cross multiply
    17,968,708.80x = 26,956,562.40 × 5,189,630.40
  4. Step 4: Simplify right side
    17,968,708.80x = 139,894,595,710,536.97
  5. Step 5: Solve for x
    x = 139,894,595,710,536.97/17,968,708.80
  6. Step 6: Final answer
    x = 7,785,456.22

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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.