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Finding the Fourth Proportional to 623,758.80, 860,884.20 and 409,520.28

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Solution

The fourth proportional to 623,758.80, 860,884.20 and 409,520.28 is: 565,201.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,758.80 : 860,884.20 = 409,520.28 : x
  2. Step 2: Convert to fraction form
    623,758.80/860,884.20 = 409,520.28/x
  3. Step 3: Cross multiply
    623,758.80x = 860,884.20 × 409,520.28
  4. Step 4: Simplify right side
    623,758.80x = 352,549,538,631.58
  5. Step 5: Solve for x
    x = 352,549,538,631.58/623,758.80
  6. Step 6: Final answer
    x = 565,201.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.