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Finding the Fourth Proportional to 296,391.92, 409,022.08 and 160,425.81

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Solution

The fourth proportional to 296,391.92, 409,022.08 and 160,425.81 is: 221,388.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,391.92 : 409,022.08 = 160,425.81 : x
  2. Step 2: Convert to fraction form
    296,391.92/409,022.08 = 160,425.81/x
  3. Step 3: Cross multiply
    296,391.92x = 409,022.08 × 160,425.81
  4. Step 4: Simplify right side
    296,391.92x = 65,617,698,090.82
  5. Step 5: Solve for x
    x = 65,617,698,090.82/296,391.92
  6. Step 6: Final answer
    x = 221,388.29

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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.