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Finding the Fourth Proportional to 121,119.59, 181,618.31 and 70,534.96

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Solution

The fourth proportional to 121,119.59, 181,618.31 and 70,534.96 is: 105,766.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,119.59 : 181,618.31 = 70,534.96 : x
  2. Step 2: Convert to fraction form
    121,119.59/181,618.31 = 70,534.96/x
  3. Step 3: Cross multiply
    121,119.59x = 181,618.31 × 70,534.96
  4. Step 4: Simplify right side
    121,119.59x = 12,810,439,953.41
  5. Step 5: Solve for x
    x = 12,810,439,953.41/121,119.59
  6. Step 6: Final answer
    x = 105,766.87

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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.