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Finding the Fourth Proportional to 114,436.80, 171,509.40 and 83,235.60

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Solution

The fourth proportional to 114,436.80, 171,509.40 and 83,235.60 is: 124,747.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,436.80 : 171,509.40 = 83,235.60 : x
  2. Step 2: Convert to fraction form
    114,436.80/171,509.40 = 83,235.60/x
  3. Step 3: Cross multiply
    114,436.80x = 171,509.40 × 83,235.60
  4. Step 4: Simplify right side
    114,436.80x = 14,275,687,814.64
  5. Step 5: Solve for x
    x = 14,275,687,814.64/114,436.80
  6. Step 6: Final answer
    x = 124,747.35

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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.