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Finding the Fourth Proportional to 121,697.80, 182,546.70 and 117,032.20

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Solution

The fourth proportional to 121,697.80, 182,546.70 and 117,032.20 is: 175,548.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,697.80 : 182,546.70 = 117,032.20 : x
  2. Step 2: Convert to fraction form
    121,697.80/182,546.70 = 117,032.20/x
  3. Step 3: Cross multiply
    121,697.80x = 182,546.70 × 117,032.20
  4. Step 4: Simplify right side
    121,697.80x = 21,363,841,903.74
  5. Step 5: Solve for x
    x = 21,363,841,903.74/121,697.80
  6. Step 6: Final answer
    x = 175,548.30

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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.