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Finding the Fourth Proportional to 121,294.30, 181,504.05 and 81,928.30

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Solution

The fourth proportional to 121,294.30, 181,504.05 and 81,928.30 is: 122,597.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,294.30 : 181,504.05 = 81,928.30 : x
  2. Step 2: Convert to fraction form
    121,294.30/181,504.05 = 81,928.30/x
  3. Step 3: Cross multiply
    121,294.30x = 181,504.05 × 81,928.30
  4. Step 4: Simplify right side
    121,294.30x = 14,870,318,259.62
  5. Step 5: Solve for x
    x = 14,870,318,259.62/121,294.30
  6. Step 6: Final answer
    x = 122,597.01

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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.