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Finding the Fourth Proportional to 236,493.29, 354,528.95 and 86,698.60

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Solution

The fourth proportional to 236,493.29, 354,528.95 and 86,698.60 is: 129,970.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,493.29 : 354,528.95 = 86,698.60 : x
  2. Step 2: Convert to fraction form
    236,493.29/354,528.95 = 86,698.60/x
  3. Step 3: Cross multiply
    236,493.29x = 354,528.95 × 86,698.60
  4. Step 4: Simplify right side
    236,493.29x = 30,737,161,851.83
  5. Step 5: Solve for x
    x = 30,737,161,851.83/236,493.29
  6. Step 6: Final answer
    x = 129,970.55

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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.