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Finding the Fourth Proportional to 236,543.58, 354,684.11 and 78,685.92

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Solution

The fourth proportional to 236,543.58, 354,684.11 and 78,685.92 is: 117,985.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,543.58 : 354,684.11 = 78,685.92 : x
  2. Step 2: Convert to fraction form
    236,543.58/354,684.11 = 78,685.92/x
  3. Step 3: Cross multiply
    236,543.58x = 354,684.11 × 78,685.92
  4. Step 4: Simplify right side
    236,543.58x = 27,908,645,111.30
  5. Step 5: Solve for x
    x = 27,908,645,111.30/236,543.58
  6. Step 6: Final answer
    x = 117,985.21

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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.