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Finding the Fourth Proportional to 66,978,851.72, 92,424,497.76 and 37,604,447.24

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Solution

The fourth proportional to 66,978,851.72, 92,424,497.76 and 37,604,447.24 is: 51,890,590.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,978,851.72 : 92,424,497.76 = 37,604,447.24 : x
  2. Step 2: Convert to fraction form
    66,978,851.72/92,424,497.76 = 37,604,447.24/x
  3. Step 3: Cross multiply
    66,978,851.72x = 92,424,497.76 × 37,604,447.24
  4. Step 4: Simplify right side
    66,978,851.72x = 3,475,572,149,699,418.50
  5. Step 5: Solve for x
    x = 3,475,572,149,699,418.50/66,978,851.72
  6. Step 6: Final answer
    x = 51,890,590.25

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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.