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Finding the Fourth Proportional to 536,774.40, 805,161.60 and 221,126.40

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Solution

The fourth proportional to 536,774.40, 805,161.60 and 221,126.40 is: 331,689.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,774.40 : 805,161.60 = 221,126.40 : x
  2. Step 2: Convert to fraction form
    536,774.40/805,161.60 = 221,126.40/x
  3. Step 3: Cross multiply
    536,774.40x = 805,161.60 × 221,126.40
  4. Step 4: Simplify right side
    536,774.40x = 178,042,486,026.24
  5. Step 5: Solve for x
    x = 178,042,486,026.24/536,774.40
  6. Step 6: Final answer
    x = 331,689.60

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.