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Finding the Fourth Proportional to 61,899.71, 85,422.54 and 33,605.40

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Solution

The fourth proportional to 61,899.71, 85,422.54 and 33,605.40 is: 46,375.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,899.71 : 85,422.54 = 33,605.40 : x
  2. Step 2: Convert to fraction form
    61,899.71/85,422.54 = 33,605.40/x
  3. Step 3: Cross multiply
    61,899.71x = 85,422.54 × 33,605.40
  4. Step 4: Simplify right side
    61,899.71x = 2,870,658,030.58
  5. Step 5: Solve for x
    x = 2,870,658,030.58/61,899.71
  6. Step 6: Final answer
    x = 46,375.96

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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.