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Finding the Fourth Proportional to 85,833, 118,439.94 and 48,101.80

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Solution

The fourth proportional to 85,833, 118,439.94 and 48,101.80 is: 66,375.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,833 : 118,439.94 = 48,101.80 : x
  2. Step 2: Convert to fraction form
    85,833/118,439.94 = 48,101.80/x
  3. Step 3: Cross multiply
    85,833x = 118,439.94 × 48,101.80
  4. Step 4: Simplify right side
    85,833x = 5,697,174,305.89
  5. Step 5: Solve for x
    x = 5,697,174,305.89/85,833
  6. Step 6: Final answer
    x = 66,375.10

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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.