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Finding the Fourth Proportional to 61,374.72, 84,330.06 and 48,777.60

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Solution

The fourth proportional to 61,374.72, 84,330.06 and 48,777.60 is: 67,021.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,374.72 : 84,330.06 = 48,777.60 : x
  2. Step 2: Convert to fraction form
    61,374.72/84,330.06 = 48,777.60/x
  3. Step 3: Cross multiply
    61,374.72x = 84,330.06 × 48,777.60
  4. Step 4: Simplify right side
    61,374.72x = 4,113,417,934.66
  5. Step 5: Solve for x
    x = 4,113,417,934.66/61,374.72
  6. Step 6: Final answer
    x = 67,021.37

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.