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Finding the Fourth Proportional to 85,554.83, 128,354.12 and 35,618.33

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Solution

The fourth proportional to 85,554.83, 128,354.12 and 35,618.33 is: 53,436.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,554.83 : 128,354.12 = 35,618.33 : x
  2. Step 2: Convert to fraction form
    85,554.83/128,354.12 = 35,618.33/x
  3. Step 3: Cross multiply
    85,554.83x = 128,354.12 × 35,618.33
  4. Step 4: Simplify right side
    85,554.83x = 4,571,759,679.38
  5. Step 5: Solve for x
    x = 4,571,759,679.38/85,554.83
  6. Step 6: Final answer
    x = 53,436.60

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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.