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Finding the Fourth Proportional to 344,312.80, 516,469.20 and 209,593.60

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Solution

The fourth proportional to 344,312.80, 516,469.20 and 209,593.60 is: 314,390.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    344,312.80 : 516,469.20 = 209,593.60 : x
  2. Step 2: Convert to fraction form
    344,312.80/516,469.20 = 209,593.60/x
  3. Step 3: Cross multiply
    344,312.80x = 516,469.20 × 209,593.60
  4. Step 4: Simplify right side
    344,312.80x = 108,248,638,917.12
  5. Step 5: Solve for x
    x = 108,248,638,917.12/344,312.80
  6. Step 6: Final answer
    x = 314,390.40

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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.