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Finding the Fourth Proportional to 85,618.63, 118,154.13 and 47,892.88

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Solution

The fourth proportional to 85,618.63, 118,154.13 and 47,892.88 is: 66,092.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,618.63 : 118,154.13 = 47,892.88 : x
  2. Step 2: Convert to fraction form
    85,618.63/118,154.13 = 47,892.88/x
  3. Step 3: Cross multiply
    85,618.63x = 118,154.13 × 47,892.88
  4. Step 4: Simplify right side
    85,618.63x = 5,658,741,569.59
  5. Step 5: Solve for x
    x = 5,658,741,569.59/85,618.63
  6. Step 6: Final answer
    x = 66,092.41

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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.