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Finding the Fourth Proportional to 67,193,642.88, 100,806,482.88 and 21,755,450.88

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Solution

The fourth proportional to 67,193,642.88, 100,806,482.88 and 21,755,450.88 is: 32,638,362.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,193,642.88 : 100,806,482.88 = 21,755,450.88 : x
  2. Step 2: Convert to fraction form
    67,193,642.88/100,806,482.88 = 21,755,450.88/x
  3. Step 3: Cross multiply
    67,193,642.88x = 100,806,482.88 × 21,755,450.88
  4. Step 4: Simplify right side
    67,193,642.88x = 2,193,090,486,681,400.75
  5. Step 5: Solve for x
    x = 2,193,090,486,681,400.75/67,193,642.88
  6. Step 6: Final answer
    x = 32,638,362.69

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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.