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Finding the Fourth Proportional to 85,883.64, 128,811.60 and 23,539.56

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Solution

The fourth proportional to 85,883.64, 128,811.60 and 23,539.56 is: 35,305.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,883.64 : 128,811.60 = 23,539.56 : x
  2. Step 2: Convert to fraction form
    85,883.64/128,811.60 = 23,539.56/x
  3. Step 3: Cross multiply
    85,883.64x = 128,811.60 × 23,539.56
  4. Step 4: Simplify right side
    85,883.64x = 3,032,168,386.90
  5. Step 5: Solve for x
    x = 3,032,168,386.90/85,883.64
  6. Step 6: Final answer
    x = 35,305.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.