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Finding the Fourth Proportional to 61,899.09, 85,420.71 and 33,604.80

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Solution

The fourth proportional to 61,899.09, 85,420.71 and 33,604.80 is: 46,374.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,899.09 : 85,420.71 = 33,604.80 : x
  2. Step 2: Convert to fraction form
    61,899.09/85,420.71 = 33,604.80/x
  3. Step 3: Cross multiply
    61,899.09x = 85,420.71 × 33,604.80
  4. Step 4: Simplify right side
    61,899.09x = 2,870,545,875.41
  5. Step 5: Solve for x
    x = 2,870,545,875.41/61,899.09
  6. Step 6: Final answer
    x = 46,374.61

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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.