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Finding the Fourth Proportional to 55,005,615.30, 82,508,422.95 and 55,005,615.30

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Solution

The fourth proportional to 55,005,615.30, 82,508,422.95 and 55,005,615.30 is: 82,508,422.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,005,615.30 : 82,508,422.95 = 55,005,615.30 : x
  2. Step 2: Convert to fraction form
    55,005,615.30/82,508,422.95 = 55,005,615.30/x
  3. Step 3: Cross multiply
    55,005,615.30x = 82,508,422.95 × 55,005,615.30
  4. Step 4: Simplify right side
    55,005,615.30x = 4,538,426,571,797,391
  5. Step 5: Solve for x
    x = 4,538,426,571,797,391/55,005,615.30
  6. Step 6: Final answer
    x = 82,508,422.95

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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.