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Finding the Fourth Proportional to 15,554,745.20, 21,726,254.80 and 15,554,745.20

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Solution

The fourth proportional to 15,554,745.20, 21,726,254.80 and 15,554,745.20 is: 21,726,254.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,554,745.20 : 21,726,254.80 = 15,554,745.20 : x
  2. Step 2: Convert to fraction form
    15,554,745.20/21,726,254.80 = 15,554,745.20/x
  3. Step 3: Cross multiply
    15,554,745.20x = 21,726,254.80 × 15,554,745.20
  4. Step 4: Simplify right side
    15,554,745.20x = 337,946,357,564,276.94
  5. Step 5: Solve for x
    x = 337,946,357,564,276.94/15,554,745.20
  6. Step 6: Final answer
    x = 21,726,254.80

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.