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Finding the Fourth Proportional to 615,943.20, 923,914.80 and 364,000.80

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Solution

The fourth proportional to 615,943.20, 923,914.80 and 364,000.80 is: 546,001.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,943.20 : 923,914.80 = 364,000.80 : x
  2. Step 2: Convert to fraction form
    615,943.20/923,914.80 = 364,000.80/x
  3. Step 3: Cross multiply
    615,943.20x = 923,914.80 × 364,000.80
  4. Step 4: Simplify right side
    615,943.20x = 336,305,726,331.84
  5. Step 5: Solve for x
    x = 336,305,726,331.84/615,943.20
  6. Step 6: Final answer
    x = 546,001.20

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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.