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Finding the Fourth Proportional to 31,554,655.80, 47,331,983.70 and 31,554,655.80

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Solution

The fourth proportional to 31,554,655.80, 47,331,983.70 and 31,554,655.80 is: 47,331,983.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,554,655.80 : 47,331,983.70 = 31,554,655.80 : x
  2. Step 2: Convert to fraction form
    31,554,655.80/47,331,983.70 = 31,554,655.80/x
  3. Step 3: Cross multiply
    31,554,655.80x = 47,331,983.70 × 31,554,655.80
  4. Step 4: Simplify right side
    31,554,655.80x = 1,493,544,453,984,710.50
  5. Step 5: Solve for x
    x = 1,493,544,453,984,710.50/31,554,655.80
  6. Step 6: Final answer
    x = 47,331,983.70

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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.