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Finding the Fourth Proportional to 538,978.80, 808,468.20 and 183,939.60

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Solution

The fourth proportional to 538,978.80, 808,468.20 and 183,939.60 is: 275,909.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,978.80 : 808,468.20 = 183,939.60 : x
  2. Step 2: Convert to fraction form
    538,978.80/808,468.20 = 183,939.60/x
  3. Step 3: Cross multiply
    538,978.80x = 808,468.20 × 183,939.60
  4. Step 4: Simplify right side
    538,978.80x = 148,709,317,320.72
  5. Step 5: Solve for x
    x = 148,709,317,320.72/538,978.80
  6. Step 6: Final answer
    x = 275,909.40

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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.