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Finding the Fourth Proportional to 236,959.02, 355,438.53 and 79,187.47

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Solution

The fourth proportional to 236,959.02, 355,438.53 and 79,187.47 is: 118,781.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,959.02 : 355,438.53 = 79,187.47 : x
  2. Step 2: Convert to fraction form
    236,959.02/355,438.53 = 79,187.47/x
  3. Step 3: Cross multiply
    236,959.02x = 355,438.53 × 79,187.47
  4. Step 4: Simplify right side
    236,959.02x = 28,146,277,931.22
  5. Step 5: Solve for x
    x = 28,146,277,931.22/236,959.02
  6. Step 6: Final answer
    x = 118,781.21

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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.