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Finding the Fourth Proportional to 61,566,911.80, 92,328,594.90 and 21,167,999.80

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Solution

The fourth proportional to 61,566,911.80, 92,328,594.90 and 21,167,999.80 is: 31,744,513.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,566,911.80 : 92,328,594.90 = 21,167,999.80 : x
  2. Step 2: Convert to fraction form
    61,566,911.80/92,328,594.90 = 21,167,999.80/x
  3. Step 3: Cross multiply
    61,566,911.80x = 92,328,594.90 × 21,167,999.80
  4. Step 4: Simplify right side
    61,566,911.80x = 1,954,411,678,377,481.25
  5. Step 5: Solve for x
    x = 1,954,411,678,377,481.25/61,566,911.80
  6. Step 6: Final answer
    x = 31,744,513.75

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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.