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Finding the Fourth Proportional to 70,744.64, 106,118.13 and 56,639.30

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Solution

The fourth proportional to 70,744.64, 106,118.13 and 56,639.30 is: 84,959.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,744.64 : 106,118.13 = 56,639.30 : x
  2. Step 2: Convert to fraction form
    70,744.64/106,118.13 = 56,639.30/x
  3. Step 3: Cross multiply
    70,744.64x = 106,118.13 × 56,639.30
  4. Step 4: Simplify right side
    70,744.64x = 6,010,456,600.51
  5. Step 5: Solve for x
    x = 6,010,456,600.51/70,744.64
  6. Step 6: Final answer
    x = 84,959.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.