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Finding the Fourth Proportional to 621,843.20, 933,225.60 and 248,134.40

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Solution

The fourth proportional to 621,843.20, 933,225.60 and 248,134.40 is: 372,385.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,843.20 : 933,225.60 = 248,134.40 : x
  2. Step 2: Convert to fraction form
    621,843.20/933,225.60 = 248,134.40/x
  3. Step 3: Cross multiply
    621,843.20x = 933,225.60 × 248,134.40
  4. Step 4: Simplify right side
    621,843.20x = 231,565,374,320.64
  5. Step 5: Solve for x
    x = 231,565,374,320.64/621,843.20
  6. Step 6: Final answer
    x = 372,385.47

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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.