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Finding the Fourth Proportional to 93,165, 128,569.98 and 50,725.84

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Solution

The fourth proportional to 93,165, 128,569.98 and 50,725.84 is: 70,002.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,165 : 128,569.98 = 50,725.84 : x
  2. Step 2: Convert to fraction form
    93,165/128,569.98 = 50,725.84/x
  3. Step 3: Cross multiply
    93,165x = 128,569.98 × 50,725.84
  4. Step 4: Simplify right side
    93,165x = 6,521,820,234.28
  5. Step 5: Solve for x
    x = 6,521,820,234.28/93,165
  6. Step 6: Final answer
    x = 70,002.90

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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.