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Finding the Fourth Proportional to 93,107.70, 128,488.14 and 50,666.54

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Solution

The fourth proportional to 93,107.70, 128,488.14 and 50,666.54 is: 69,919.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,107.70 : 128,488.14 = 50,666.54 : x
  2. Step 2: Convert to fraction form
    93,107.70/128,488.14 = 50,666.54/x
  3. Step 3: Cross multiply
    93,107.70x = 128,488.14 × 50,666.54
  4. Step 4: Simplify right side
    93,107.70x = 6,510,048,842.39
  5. Step 5: Solve for x
    x = 6,510,048,842.39/93,107.70
  6. Step 6: Final answer
    x = 69,919.55

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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.