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Finding the Fourth Proportional to 93,125.81, 128,513.62 and 50,684.65

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Solution

The fourth proportional to 93,125.81, 128,513.62 and 50,684.65 is: 69,944.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,125.81 : 128,513.62 = 50,684.65 : x
  2. Step 2: Convert to fraction form
    93,125.81/128,513.62 = 50,684.65/x
  3. Step 3: Cross multiply
    93,125.81x = 128,513.62 × 50,684.65
  4. Step 4: Simplify right side
    93,125.81x = 6,513,667,592.00
  5. Step 5: Solve for x
    x = 6,513,667,592.00/93,125.81
  6. Step 6: Final answer
    x = 69,944.81

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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.