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Finding the Fourth Proportional to 538,683.40, 808,899.90 and 361,973.80

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Solution

The fourth proportional to 538,683.40, 808,899.90 and 361,973.80 is: 543,548.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,683.40 : 808,899.90 = 361,973.80 : x
  2. Step 2: Convert to fraction form
    538,683.40/808,899.90 = 361,973.80/x
  3. Step 3: Cross multiply
    538,683.40x = 808,899.90 × 361,973.80
  4. Step 4: Simplify right side
    538,683.40x = 292,800,570,622.62
  5. Step 5: Solve for x
    x = 292,800,570,622.62/538,683.40
  6. Step 6: Final answer
    x = 543,548.53

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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.