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Finding the Fourth Proportional to 72,561,621.90, 101,873,248.80 and 72,561,621.90

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Solution

The fourth proportional to 72,561,621.90, 101,873,248.80 and 72,561,621.90 is: 101,873,248.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,561,621.90 : 101,873,248.80 = 72,561,621.90 : x
  2. Step 2: Convert to fraction form
    72,561,621.90/101,873,248.80 = 72,561,621.90/x
  3. Step 3: Cross multiply
    72,561,621.90x = 101,873,248.80 × 72,561,621.90
  4. Step 4: Simplify right side
    72,561,621.90x = 7,392,088,161,150,229
  5. Step 5: Solve for x
    x = 7,392,088,161,150,229/72,561,621.90
  6. Step 6: Final answer
    x = 101,873,248.80

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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.