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Finding the Fourth Proportional to 433,451.49, 650,308.14 and 129,855.53

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Solution

The fourth proportional to 433,451.49, 650,308.14 and 129,855.53 is: 194,822.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    433,451.49 : 650,308.14 = 129,855.53 : x
  2. Step 2: Convert to fraction form
    433,451.49/650,308.14 = 129,855.53/x
  3. Step 3: Cross multiply
    433,451.49x = 650,308.14 × 129,855.53
  4. Step 4: Simplify right side
    433,451.49x = 84,446,104,931.47
  5. Step 5: Solve for x
    x = 84,446,104,931.47/433,451.49
  6. Step 6: Final answer
    x = 194,822.50

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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.