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Finding the Fourth Proportional to 383,999.20, 575,998.80 and 356,005.60

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Solution

The fourth proportional to 383,999.20, 575,998.80 and 356,005.60 is: 534,008.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,999.20 : 575,998.80 = 356,005.60 : x
  2. Step 2: Convert to fraction form
    383,999.20/575,998.80 = 356,005.60/x
  3. Step 3: Cross multiply
    383,999.20x = 575,998.80 × 356,005.60
  4. Step 4: Simplify right side
    383,999.20x = 205,058,798,393.28
  5. Step 5: Solve for x
    x = 205,058,798,393.28/383,999.20
  6. Step 6: Final answer
    x = 534,008.40

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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.