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Finding the Fourth Proportional to 21,032,548.80, 31,548,823.20 and 21,032,548.80

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Solution

The fourth proportional to 21,032,548.80, 31,548,823.20 and 21,032,548.80 is: 31,548,823.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,032,548.80 : 31,548,823.20 = 21,032,548.80 : x
  2. Step 2: Convert to fraction form
    21,032,548.80/31,548,823.20 = 21,032,548.80/x
  3. Step 3: Cross multiply
    21,032,548.80x = 31,548,823.20 × 21,032,548.80
  4. Step 4: Simplify right side
    21,032,548.80x = 663,552,163,536,572.12
  5. Step 5: Solve for x
    x = 663,552,163,536,572.12/21,032,548.80
  6. Step 6: Final answer
    x = 31,548,823.20

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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.