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Finding the Fourth Proportional to 66,937,570.20, 100,406,355.30 and 66,937,570.20

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Solution

The fourth proportional to 66,937,570.20, 100,406,355.30 and 66,937,570.20 is: 100,406,355.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,937,570.20 : 100,406,355.30 = 66,937,570.20 : x
  2. Step 2: Convert to fraction form
    66,937,570.20/100,406,355.30 = 66,937,570.20/x
  3. Step 3: Cross multiply
    66,937,570.20x = 100,406,355.30 × 66,937,570.20
  4. Step 4: Simplify right side
    66,937,570.20x = 6,720,957,456,419,892
  5. Step 5: Solve for x
    x = 6,720,957,456,419,892/66,937,570.20
  6. Step 6: Final answer
    x = 100,406,355.30

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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.