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Finding the Fourth Proportional to 129,015.60, 193,523.40 and 97,522.80

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Solution

The fourth proportional to 129,015.60, 193,523.40 and 97,522.80 is: 146,284.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,015.60 : 193,523.40 = 97,522.80 : x
  2. Step 2: Convert to fraction form
    129,015.60/193,523.40 = 97,522.80/x
  3. Step 3: Cross multiply
    129,015.60x = 193,523.40 × 97,522.80
  4. Step 4: Simplify right side
    129,015.60x = 18,872,943,833.52
  5. Step 5: Solve for x
    x = 18,872,943,833.52/129,015.60
  6. Step 6: Final answer
    x = 146,284.20

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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.