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Finding the Fourth Proportional to 127,276.70, 190,915.05 and 97,843.10

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Solution

The fourth proportional to 127,276.70, 190,915.05 and 97,843.10 is: 146,764.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,276.70 : 190,915.05 = 97,843.10 : x
  2. Step 2: Convert to fraction form
    127,276.70/190,915.05 = 97,843.10/x
  3. Step 3: Cross multiply
    127,276.70x = 190,915.05 × 97,843.10
  4. Step 4: Simplify right side
    127,276.70x = 18,679,720,328.66
  5. Step 5: Solve for x
    x = 18,679,720,328.66/127,276.70
  6. Step 6: Final answer
    x = 146,764.65

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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.