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Finding the Fourth Proportional to 78,798.94, 108,782.67 and 60,853.66

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Solution

The fourth proportional to 78,798.94, 108,782.67 and 60,853.66 is: 84,009.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,798.94 : 108,782.67 = 60,853.66 : x
  2. Step 2: Convert to fraction form
    78,798.94/108,782.67 = 60,853.66/x
  3. Step 3: Cross multiply
    78,798.94x = 108,782.67 × 60,853.66
  4. Step 4: Simplify right side
    78,798.94x = 6,619,823,614.07
  5. Step 5: Solve for x
    x = 6,619,823,614.07/78,798.94
  6. Step 6: Final answer
    x = 84,009.04

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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.