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Finding the Fourth Proportional to 21,032,481.30, 31,548,721.95 and 21,032,481.30

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Solution

The fourth proportional to 21,032,481.30, 31,548,721.95 and 21,032,481.30 is: 31,548,721.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,032,481.30 : 31,548,721.95 = 21,032,481.30 : x
  2. Step 2: Convert to fraction form
    21,032,481.30/31,548,721.95 = 21,032,481.30/x
  3. Step 3: Cross multiply
    21,032,481.30x = 31,548,721.95 × 21,032,481.30
  4. Step 4: Simplify right side
    21,032,481.30x = 663,547,904,452,274.50
  5. Step 5: Solve for x
    x = 663,547,904,452,274.50/21,032,481.30
  6. Step 6: Final answer
    x = 31,548,721.95

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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.