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Finding the Fourth Proportional to 84,359.88, 126,457.20 and 46,937.88

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Solution

The fourth proportional to 84,359.88, 126,457.20 and 46,937.88 is: 70,360.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,359.88 : 126,457.20 = 46,937.88 : x
  2. Step 2: Convert to fraction form
    84,359.88/126,457.20 = 46,937.88/x
  3. Step 3: Cross multiply
    84,359.88x = 126,457.20 × 46,937.88
  4. Step 4: Simplify right side
    84,359.88x = 5,935,632,878.74
  5. Step 5: Solve for x
    x = 5,935,632,878.74/84,359.88
  6. Step 6: Final answer
    x = 70,360.85

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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.