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Finding the Fourth Proportional to 533,805.39, 736,578.90 and 318,899.97

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Solution

The fourth proportional to 533,805.39, 736,578.90 and 318,899.97 is: 440,038.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    533,805.39 : 736,578.90 = 318,899.97 : x
  2. Step 2: Convert to fraction form
    533,805.39/736,578.90 = 318,899.97/x
  3. Step 3: Cross multiply
    533,805.39x = 736,578.90 × 318,899.97
  4. Step 4: Simplify right side
    533,805.39x = 234,894,989,112.63
  5. Step 5: Solve for x
    x = 234,894,989,112.63/533,805.39
  6. Step 6: Final answer
    x = 440,038.62

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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.