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Finding the Fourth Proportional to 114,326.80, 171,490.20 and 72,336.40

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Solution

The fourth proportional to 114,326.80, 171,490.20 and 72,336.40 is: 108,504.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,326.80 : 171,490.20 = 72,336.40 : x
  2. Step 2: Convert to fraction form
    114,326.80/171,490.20 = 72,336.40/x
  3. Step 3: Cross multiply
    114,326.80x = 171,490.20 × 72,336.40
  4. Step 4: Simplify right side
    114,326.80x = 12,404,983,703.28
  5. Step 5: Solve for x
    x = 12,404,983,703.28/114,326.80
  6. Step 6: Final answer
    x = 108,504.60

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1.5x scale

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.