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Finding the Fourth Proportional to 355,855.20, 533,782.80 and 340,497.60

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Solution

The fourth proportional to 355,855.20, 533,782.80 and 340,497.60 is: 510,746.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,855.20 : 533,782.80 = 340,497.60 : x
  2. Step 2: Convert to fraction form
    355,855.20/533,782.80 = 340,497.60/x
  3. Step 3: Cross multiply
    355,855.20x = 533,782.80 × 340,497.60
  4. Step 4: Simplify right side
    355,855.20x = 181,751,762,321.28
  5. Step 5: Solve for x
    x = 181,751,762,321.28/355,855.20
  6. Step 6: Final answer
    x = 510,746.40

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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.