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Finding the Fourth Proportional to 615,770.40, 923,655.60 and 416,186.40

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Solution

The fourth proportional to 615,770.40, 923,655.60 and 416,186.40 is: 624,279.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,770.40 : 923,655.60 = 416,186.40 : x
  2. Step 2: Convert to fraction form
    615,770.40/923,655.60 = 416,186.40/x
  3. Step 3: Cross multiply
    615,770.40x = 923,655.60 × 416,186.40
  4. Step 4: Simplify right side
    615,770.40x = 384,412,899,003.84
  5. Step 5: Solve for x
    x = 384,412,899,003.84/615,770.40
  6. Step 6: Final answer
    x = 624,279.60

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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.