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Finding the Fourth Proportional to 61,674.15, 85,109.40 and 34,450.61

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Solution

The fourth proportional to 61,674.15, 85,109.40 and 34,450.61 is: 47,541.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,674.15 : 85,109.40 = 34,450.61 : x
  2. Step 2: Convert to fraction form
    61,674.15/85,109.40 = 34,450.61/x
  3. Step 3: Cross multiply
    61,674.15x = 85,109.40 × 34,450.61
  4. Step 4: Simplify right side
    61,674.15x = 2,932,070,321.19
  5. Step 5: Solve for x
    x = 2,932,070,321.19/61,674.15
  6. Step 6: Final answer
    x = 47,541.32

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1.5x scale

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.