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Finding the Fourth Proportional to 121,720.60, 182,580.90 and 32,985.10

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Solution

The fourth proportional to 121,720.60, 182,580.90 and 32,985.10 is: 49,477.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,720.60 : 182,580.90 = 32,985.10 : x
  2. Step 2: Convert to fraction form
    121,720.60/182,580.90 = 32,985.10/x
  3. Step 3: Cross multiply
    121,720.60x = 182,580.90 × 32,985.10
  4. Step 4: Simplify right side
    121,720.60x = 6,022,449,244.59
  5. Step 5: Solve for x
    x = 6,022,449,244.59/121,720.60
  6. Step 6: Final answer
    x = 49,477.65

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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.