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Finding the Fourth Proportional to 170,530.80, 235,270.80 and 98,871.36

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Solution

The fourth proportional to 170,530.80, 235,270.80 and 98,871.36 is: 136,406.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,530.80 : 235,270.80 = 98,871.36 : x
  2. Step 2: Convert to fraction form
    170,530.80/235,270.80 = 98,871.36/x
  3. Step 3: Cross multiply
    170,530.80x = 235,270.80 × 98,871.36
  4. Step 4: Simplify right side
    170,530.80x = 23,261,543,964.29
  5. Step 5: Solve for x
    x = 23,261,543,964.29/170,530.80
  6. Step 6: Final answer
    x = 136,406.70

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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.