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Finding the Fourth Proportional to 42,007,215.80, 62,911,290.90 and 42,007,215.80

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Solution

The fourth proportional to 42,007,215.80, 62,911,290.90 and 42,007,215.80 is: 62,911,290.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,007,215.80 : 62,911,290.90 = 42,007,215.80 : x
  2. Step 2: Convert to fraction form
    42,007,215.80/62,911,290.90 = 42,007,215.80/x
  3. Step 3: Cross multiply
    42,007,215.80x = 62,911,290.90 × 42,007,215.80
  4. Step 4: Simplify right side
    42,007,215.80x = 2,642,728,173,092,876
  5. Step 5: Solve for x
    x = 2,642,728,173,092,876/42,007,215.80
  6. Step 6: Final answer
    x = 62,911,290.90

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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.