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Finding the Fourth Proportional to 71,276.92, 106,915.44 and 21,362.32

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Solution

The fourth proportional to 71,276.92, 106,915.44 and 21,362.32 is: 32,043.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,276.92 : 106,915.44 = 21,362.32 : x
  2. Step 2: Convert to fraction form
    71,276.92/106,915.44 = 21,362.32/x
  3. Step 3: Cross multiply
    71,276.92x = 106,915.44 × 21,362.32
  4. Step 4: Simplify right side
    71,276.92x = 2,283,961,842.22
  5. Step 5: Solve for x
    x = 2,283,961,842.22/71,276.92
  6. Step 6: Final answer
    x = 32,043.50

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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.