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Finding the Fourth Proportional to 85,999.44, 128,999.88 and 23,673.36

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Solution

The fourth proportional to 85,999.44, 128,999.88 and 23,673.36 is: 35,510.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,999.44 : 128,999.88 = 23,673.36 : x
  2. Step 2: Convert to fraction form
    85,999.44/128,999.88 = 23,673.36/x
  3. Step 3: Cross multiply
    85,999.44x = 128,999.88 × 23,673.36
  4. Step 4: Simplify right side
    85,999.44x = 3,053,860,599.20
  5. Step 5: Solve for x
    x = 3,053,860,599.20/85,999.44
  6. Step 6: Final answer
    x = 35,510.24

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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.