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Finding the Fourth Proportional to 121,236.60, 181,811.70 and 42,353.40

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Solution

The fourth proportional to 121,236.60, 181,811.70 and 42,353.40 is: 63,515.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,236.60 : 181,811.70 = 42,353.40 : x
  2. Step 2: Convert to fraction form
    121,236.60/181,811.70 = 42,353.40/x
  3. Step 3: Cross multiply
    121,236.60x = 181,811.70 × 42,353.40
  4. Step 4: Simplify right side
    121,236.60x = 7,700,343,654.78
  5. Step 5: Solve for x
    x = 7,700,343,654.78/121,236.60
  6. Step 6: Final answer
    x = 63,515.01

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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.