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Finding the Fourth Proportional to 78,605.88, 108,479.64 and 46,341.84

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Solution

The fourth proportional to 78,605.88, 108,479.64 and 46,341.84 is: 63,953.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,605.88 : 108,479.64 = 46,341.84 : x
  2. Step 2: Convert to fraction form
    78,605.88/108,479.64 = 46,341.84/x
  3. Step 3: Cross multiply
    78,605.88x = 108,479.64 × 46,341.84
  4. Step 4: Simplify right side
    78,605.88x = 5,027,146,120.14
  5. Step 5: Solve for x
    x = 5,027,146,120.14/78,605.88
  6. Step 6: Final answer
    x = 63,953.82

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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.