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Finding the Fourth Proportional to 543,243.60, 814,865.40 and 395,787.60

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Solution

The fourth proportional to 543,243.60, 814,865.40 and 395,787.60 is: 593,681.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,243.60 : 814,865.40 = 395,787.60 : x
  2. Step 2: Convert to fraction form
    543,243.60/814,865.40 = 395,787.60/x
  3. Step 3: Cross multiply
    543,243.60x = 814,865.40 × 395,787.60
  4. Step 4: Simplify right side
    543,243.60x = 322,513,620,989.04
  5. Step 5: Solve for x
    x = 322,513,620,989.04/543,243.60
  6. Step 6: Final answer
    x = 593,681.40

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Half scale
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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.