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Finding the Fourth Proportional to 72,606,422.20, 101,724,573.80 and 72,606,422.20

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Solution

The fourth proportional to 72,606,422.20, 101,724,573.80 and 72,606,422.20 is: 101,724,573.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,606,422.20 : 101,724,573.80 = 72,606,422.20 : x
  2. Step 2: Convert to fraction form
    72,606,422.20/101,724,573.80 = 72,606,422.20/x
  3. Step 3: Cross multiply
    72,606,422.20x = 101,724,573.80 × 72,606,422.20
  4. Step 4: Simplify right side
    72,606,422.20x = 7,385,857,353,437,858
  5. Step 5: Solve for x
    x = 7,385,857,353,437,858/72,606,422.20
  6. Step 6: Final answer
    x = 101,724,573.80

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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.