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Finding the Fourth Proportional to 498,017.82, 687,266.76 and 271,668.18

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Solution

The fourth proportional to 498,017.82, 687,266.76 and 271,668.18 is: 374,903.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,017.82 : 687,266.76 = 271,668.18 : x
  2. Step 2: Convert to fraction form
    498,017.82/687,266.76 = 271,668.18/x
  3. Step 3: Cross multiply
    498,017.82x = 687,266.76 × 271,668.18
  4. Step 4: Simplify right side
    498,017.82x = 186,708,509,863.70
  5. Step 5: Solve for x
    x = 186,708,509,863.70/498,017.82
  6. Step 6: Final answer
    x = 374,903.27

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Double scale
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Similar ratio
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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.