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Finding the Fourth Proportional to 57,479.69, 86,194.40 and 28,999.12

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Solution

The fourth proportional to 57,479.69, 86,194.40 and 28,999.12 is: 43,486.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,479.69 : 86,194.40 = 28,999.12 : x
  2. Step 2: Convert to fraction form
    57,479.69/86,194.40 = 28,999.12/x
  3. Step 3: Cross multiply
    57,479.69x = 86,194.40 × 28,999.12
  4. Step 4: Simplify right side
    57,479.69x = 2,499,561,748.93
  5. Step 5: Solve for x
    x = 2,499,561,748.93/57,479.69
  6. Step 6: Final answer
    x = 43,486.00

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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.