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Finding the Fourth Proportional to 261,708.80, 361,164.80 and 161,126.40

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Solution

The fourth proportional to 261,708.80, 361,164.80 and 161,126.40 is: 222,358.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,708.80 : 361,164.80 = 161,126.40 : x
  2. Step 2: Convert to fraction form
    261,708.80/361,164.80 = 161,126.40/x
  3. Step 3: Cross multiply
    261,708.80x = 361,164.80 × 161,126.40
  4. Step 4: Simplify right side
    261,708.80x = 58,193,184,030.72
  5. Step 5: Solve for x
    x = 58,193,184,030.72/261,708.80
  6. Step 6: Final answer
    x = 222,358.53

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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.