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Finding the Fourth Proportional to 170,650.79, 235,544.93 and 99,053.88

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Solution

The fourth proportional to 170,650.79, 235,544.93 and 99,053.88 is: 136,721.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,650.79 : 235,544.93 = 99,053.88 : x
  2. Step 2: Convert to fraction form
    170,650.79/235,544.93 = 99,053.88/x
  3. Step 3: Cross multiply
    170,650.79x = 235,544.93 × 99,053.88
  4. Step 4: Simplify right side
    170,650.79x = 23,331,639,230.83
  5. Step 5: Solve for x
    x = 23,331,639,230.83/170,650.79
  6. Step 6: Final answer
    x = 136,721.54

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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.