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Finding the Fourth Proportional to 70,859.80, 106,260.54 and 56,104.84

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Solution

The fourth proportional to 70,859.80, 106,260.54 and 56,104.84 is: 84,134.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,859.80 : 106,260.54 = 56,104.84 : x
  2. Step 2: Convert to fraction form
    70,859.80/106,260.54 = 56,104.84/x
  3. Step 3: Cross multiply
    70,859.80x = 106,260.54 × 56,104.84
  4. Step 4: Simplify right side
    70,859.80x = 5,961,730,595.01
  5. Step 5: Solve for x
    x = 5,961,730,595.01/70,859.80
  6. Step 6: Final answer
    x = 84,134.17

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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.