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Finding the Fourth Proportional to 74,935.60, 112,403.40 and 37,610.80

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Solution

The fourth proportional to 74,935.60, 112,403.40 and 37,610.80 is: 56,416.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,935.60 : 112,403.40 = 37,610.80 : x
  2. Step 2: Convert to fraction form
    74,935.60/112,403.40 = 37,610.80/x
  3. Step 3: Cross multiply
    74,935.60x = 112,403.40 × 37,610.80
  4. Step 4: Simplify right side
    74,935.60x = 4,227,581,796.72
  5. Step 5: Solve for x
    x = 4,227,581,796.72/74,935.60
  6. Step 6: Final answer
    x = 56,416.20

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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.