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Finding the Fourth Proportional to 93,309.64, 128,766.90 and 50,867.80

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Solution

The fourth proportional to 93,309.64, 128,766.90 and 50,867.80 is: 70,197.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,309.64 : 128,766.90 = 50,867.80 : x
  2. Step 2: Convert to fraction form
    93,309.64/128,766.90 = 50,867.80/x
  3. Step 3: Cross multiply
    93,309.64x = 128,766.90 × 50,867.80
  4. Step 4: Simplify right side
    93,309.64x = 6,550,088,915.82
  5. Step 5: Solve for x
    x = 6,550,088,915.82/93,309.64
  6. Step 6: Final answer
    x = 70,197.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.