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Finding the Fourth Proportional to 61,706.80, 85,155 and 33,411.88

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Solution

The fourth proportional to 61,706.80, 85,155 and 33,411.88 is: 46,108.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,706.80 : 85,155 = 33,411.88 : x
  2. Step 2: Convert to fraction form
    61,706.80/85,155 = 33,411.88/x
  3. Step 3: Cross multiply
    61,706.80x = 85,155 × 33,411.88
  4. Step 4: Simplify right side
    61,706.80x = 2,845,188,641.40
  5. Step 5: Solve for x
    x = 2,845,188,641.40/61,706.80
  6. Step 6: Final answer
    x = 46,108.19

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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.