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Finding the Fourth Proportional to 411,331.60, 617,040.60 and 130,783.60

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Solution

The fourth proportional to 411,331.60, 617,040.60 and 130,783.60 is: 196,189.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,331.60 : 617,040.60 = 130,783.60 : x
  2. Step 2: Convert to fraction form
    411,331.60/617,040.60 = 130,783.60/x
  3. Step 3: Cross multiply
    411,331.60x = 617,040.60 × 130,783.60
  4. Step 4: Simplify right side
    411,331.60x = 80,698,791,014.16
  5. Step 5: Solve for x
    x = 80,698,791,014.16/411,331.60
  6. Step 6: Final answer
    x = 196,189.14

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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.