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Finding the Fourth Proportional to 5,557,649.76, 7,669,391.90 and 3,076,980.96

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Solution

The fourth proportional to 5,557,649.76, 7,669,391.90 and 3,076,980.96 is: 4,246,142.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,557,649.76 : 7,669,391.90 = 3,076,980.96 : x
  2. Step 2: Convert to fraction form
    5,557,649.76/7,669,391.90 = 3,076,980.96/x
  3. Step 3: Cross multiply
    5,557,649.76x = 7,669,391.90 × 3,076,980.96
  4. Step 4: Simplify right side
    5,557,649.76x = 23,598,572,851,078.23
  5. Step 5: Solve for x
    x = 23,598,572,851,078.23/5,557,649.76
  6. Step 6: Final answer
    x = 4,246,142.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.