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Finding the Fourth Proportional to 79,066.67, 109,178.48 and 56,474.96

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Solution

The fourth proportional to 79,066.67, 109,178.48 and 56,474.96 is: 77,982.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,066.67 : 109,178.48 = 56,474.96 : x
  2. Step 2: Convert to fraction form
    79,066.67/109,178.48 = 56,474.96/x
  3. Step 3: Cross multiply
    79,066.67x = 109,178.48 × 56,474.96
  4. Step 4: Simplify right side
    79,066.67x = 6,165,849,886.16
  5. Step 5: Solve for x
    x = 6,165,849,886.16/79,066.67
  6. Step 6: Final answer
    x = 77,982.93

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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.