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Finding the Fourth Proportional to 353,515, 487,769.86 and 200,516.68

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Solution

The fourth proportional to 353,515, 487,769.86 and 200,516.68 is: 276,667.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,515 : 487,769.86 = 200,516.68 : x
  2. Step 2: Convert to fraction form
    353,515/487,769.86 = 200,516.68/x
  3. Step 3: Cross multiply
    353,515x = 487,769.86 × 200,516.68
  4. Step 4: Simplify right side
    353,515x = 97,805,992,931.26
  5. Step 5: Solve for x
    x = 97,805,992,931.26/353,515
  6. Step 6: Final answer
    x = 276,667.17

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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.