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Finding the Fourth Proportional to 114,306.80, 171,460.20 and 72,316.40

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Solution

The fourth proportional to 114,306.80, 171,460.20 and 72,316.40 is: 108,474.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,306.80 : 171,460.20 = 72,316.40 : x
  2. Step 2: Convert to fraction form
    114,306.80/171,460.20 = 72,316.40/x
  3. Step 3: Cross multiply
    114,306.80x = 171,460.20 × 72,316.40
  4. Step 4: Simplify right side
    114,306.80x = 12,399,384,407.28
  5. Step 5: Solve for x
    x = 12,399,384,407.28/114,306.80
  6. Step 6: Final answer
    x = 108,474.60

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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.