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Finding the Fourth Proportional to 81,876.60, 112,987.98 and 46,066.20

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Solution

The fourth proportional to 81,876.60, 112,987.98 and 46,066.20 is: 63,570.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,876.60 : 112,987.98 = 46,066.20 : x
  2. Step 2: Convert to fraction form
    81,876.60/112,987.98 = 46,066.20/x
  3. Step 3: Cross multiply
    81,876.60x = 112,987.98 × 46,066.20
  4. Step 4: Simplify right side
    81,876.60x = 5,204,926,884.28
  5. Step 5: Solve for x
    x = 5,204,926,884.28/81,876.60
  6. Step 6: Final answer
    x = 63,570.38

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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.