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Finding the Fourth Proportional to 74,876.73, 112,215.74 and 39,740.73

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Solution

The fourth proportional to 74,876.73, 112,215.74 and 39,740.73 is: 59,558.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,876.73 : 112,215.74 = 39,740.73 : x
  2. Step 2: Convert to fraction form
    74,876.73/112,215.74 = 39,740.73/x
  3. Step 3: Cross multiply
    74,876.73x = 112,215.74 × 39,740.73
  4. Step 4: Simplify right side
    74,876.73x = 4,459,535,226.39
  5. Step 5: Solve for x
    x = 4,459,535,226.39/74,876.73
  6. Step 6: Final answer
    x = 59,558.36

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1.5x scale

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.