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Finding the Fourth Proportional to 10,986,735.20, 16,480,102.80 and 10,426,863.20

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Solution

The fourth proportional to 10,986,735.20, 16,480,102.80 and 10,426,863.20 is: 15,640,294.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,986,735.20 : 16,480,102.80 = 10,426,863.20 : x
  2. Step 2: Convert to fraction form
    10,986,735.20/16,480,102.80 = 10,426,863.20/x
  3. Step 3: Cross multiply
    10,986,735.20x = 16,480,102.80 × 10,426,863.20
  4. Step 4: Simplify right side
    10,986,735.20x = 171,835,777,417,536.97
  5. Step 5: Solve for x
    x = 171,835,777,417,536.97/10,986,735.20
  6. Step 6: Final answer
    x = 15,640,294.80

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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.