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Finding the Fourth Proportional to 70,915.80, 106,373.70 and 58,231.20

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Solution

The fourth proportional to 70,915.80, 106,373.70 and 58,231.20 is: 87,346.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,915.80 : 106,373.70 = 58,231.20 : x
  2. Step 2: Convert to fraction form
    70,915.80/106,373.70 = 58,231.20/x
  3. Step 3: Cross multiply
    70,915.80x = 106,373.70 × 58,231.20
  4. Step 4: Simplify right side
    70,915.80x = 6,194,268,199.44
  5. Step 5: Solve for x
    x = 6,194,268,199.44/70,915.80
  6. Step 6: Final answer
    x = 87,346.80

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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.