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Finding the Fourth Proportional to 68,412.16, 94,407.80 and 38,197.96

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Solution

The fourth proportional to 68,412.16, 94,407.80 and 38,197.96 is: 52,712.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,412.16 : 94,407.80 = 38,197.96 : x
  2. Step 2: Convert to fraction form
    68,412.16/94,407.80 = 38,197.96/x
  3. Step 3: Cross multiply
    68,412.16x = 94,407.80 × 38,197.96
  4. Step 4: Simplify right side
    68,412.16x = 3,606,185,368.09
  5. Step 5: Solve for x
    x = 3,606,185,368.09/68,412.16
  6. Step 6: Final answer
    x = 52,712.64

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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.