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Finding the Fourth Proportional to 79,294.64, 109,428.10 and 43,482.51

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Solution

The fourth proportional to 79,294.64, 109,428.10 and 43,482.51 is: 60,006.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,294.64 : 109,428.10 = 43,482.51 : x
  2. Step 2: Convert to fraction form
    79,294.64/109,428.10 = 43,482.51/x
  3. Step 3: Cross multiply
    79,294.64x = 109,428.10 × 43,482.51
  4. Step 4: Simplify right side
    79,294.64x = 4,758,208,343.82
  5. Step 5: Solve for x
    x = 4,758,208,343.82/79,294.64
  6. Step 6: Final answer
    x = 60,006.69

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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.